| Season 1 | Episode 1 | The Making of a Natural History Film | 1974-03-03 | 60 min |
| Season 1 | Episode 2 | Where Did the Colorado Go? | 1974-03-10 | 60 min |
| Season 1 | Episode 3 | Whales, Dolphins, and Men | 1974-03-17 | 60 min |
| Season 1 | Episode 4 | The Search for Life | 1974-03-24 | 60 min |
| Season 1 | Episode 5 | Last of the Cuiva | 1974-03-31 | 60 min |
| Season 1 | Episode 6 | Strange Sleep | 1974-04-07 | 60 min |
| Season 1 | Episode 7 | The Crab Nebula | 1974-04-14 | 60 min |
| Season 1 | Episode 8 | Bird Brain: The Mystery of Bird Navigation | 1974-04-21 | 60 min |
| Season 1 | Episode 9 | Are You Doing This for Me, Doctor? | 1974-04-28 | 60 min |
| Season 1 | Episode 10 | The First Signs of Washoe | 1974-05-05 | 60 min |
| Season 1 | Episode 11 | The Case of the Midwife Toad | 1974-05-12 | 60 min |
| Season 1 | Episode 12 | Fusion: The Energy of Promise | 1974-05-19 | 60 min |
| Season 1 | Episode 13 | The Mystery of the Anasazi | 1974-05-26 | 60 min |
| Season 2 | Episode 1 | Why Do Birds Sing? | 1974-11-03 | 60 min |
| Season 2 | Episode 2 | How Much Do You Smell? | 1974-11-10 | 60 min |
| Season 2 | Episode 3 | The Hunting of the Quark | 1974-11-17 | 60 min |
| Season 2 | Episode 4 | The Secrets of Sleep | 1974-11-24 | 60 min |
| Season 2 | Episode 5 | Inside the Golden Gate | 1974-12-01 | 60 min |
| Season 2 | Episode 6 | The Men Who Painted Caves | 1974-12-08 | 60 min |
| Season 2 | Episode 7 | Red Sea Coral | 1974-12-15 | 60 min |
| Season 2 | Episode 8 | War from the Air | 1975-01-05 | 60 min |
| Season 2 | Episode 9 | What Time Is Your Body? | 1975-01-12 | 60 min |
| Season 2 | Episode 10 | The Rise and Fall of DDT | 1975-01-19 | 60 min |
| Season 2 | Episode 11 | Take the World from Another Point of View | 1975-02-02 | 60 min |
| Season 2 | Episode 12 | The Lysenko Affair | 1975-02-09 | 60 min |
| Season 2 | Episode 13 | The Tuaregs | 1975-02-16 | 60 min |
| Season 2 | Episode 14 | The Plutonium Connection | 1975-03-09 | 60 min |
| Season 2 | Episode 15 | The Other Way | 1975-03-16 | 60 min |
| Season 2 | Episode 16 | The Lost World of the Maya | 1975-03-30 | 60 min |
| Season 2 | Episode 17 | Will the Fishing Have to Stop? | 1975-04-06 | 60 min |
| Season 3 | Episode 1 | Predictable Disaster | 1976-01-04 | 60 min |
| Season 3 | Episode 2 | Joey | 1976-01-11 | 60 min |
| Season 3 | Episode 3 | Meditation and the Mind | 1976-01-18 | 60 min |
| Season 3 | Episode 4 | The Planets | 1976-01-25 | 60 min |
| Season 3 | Episode 5 | A Desert Place | 1976-02-01 | 60 min |
| Season 3 | Episode 6 | A Small Imperfection | 1976-02-08 | 60 min |
| Season 3 | Episode 7 | Ninety Degrees Below | 1976-02-15 | 60 min |
| Season 3 | Episode 8 | The Race for the Double Helix | 1976-03-07 | 60 min |
| Season 3 | Episode 9 | The Renewable Tree | 1976-03-07 | 60 min |
| Season 3 | Episode 10 | The Williamsburgh File | 1976-03-14 | 60 min |
| Season 3 | Episode 11 | The Overworked Miracle | 1976-03-21 | 60 min |
| Season 3 | Episode 12 | The Transplant Experiment | 1976-04-11 | 60 min |
| Season 3 | Episode 13 | The Underground Movement | 1976-04-18 | 60 min |
| Season 3 | Episode 14 | Hunters of the Seal | 1976-05-02 | 60 min |
| Season 3 | Episode 15 | Benjamin | 1976-05-09 | 60 min |
| Season 3 | Episode 16 | The Women Rebel | 1976-05-23 | 60 min |
| Season 3 | Episode 17 | Death of a Disease | 1976-06-06 | 60 min |
| Season 3 | Episode 18 | Inside the Shark | 1976-06-13 | 60 min |
| Season 3 | Episode 19 | The Genetic Chance | 1976-06-20 | 60 min |
| Season 3 | Episode 20 | The Case of the Bermuda Triangle | 1976-06-27 | 60 min |
| Season 4 | Episode 1 | Hitler's Secret Weapon | 1977-01-05 | 60 min |
| Season 4 | Episode 2 | The Hot Blooded Dinosaurs | 1977-01-12 | 60 min |
| Season 4 | Episode 3 | What Price Coal? | 1977-01-19 | 60 min |
| Season 4 | Episode 4 | The Sunspot Mystery | 1977-02-02 | 60 min |
| Season 4 | Episode 5 | The Plastic Prison | 1977-02-09 | 60 min |
| Season 4 | Episode 6 | Incident at Brown's Ferry | 1977-02-23 | 60 min |
| Season 4 | Episode 7 | Bye Bye Blackbird | 1977-03-02 | 60 min |
| Season 4 | Episode 8 | The Pill for the People | 1977-03-09 | 60 min |
| Season 4 | Episode 9 | The Gene Engineers | 1977-03-16 | 60 min |
| Season 4 | Episode 10 | The Human Animal | 1977-03-23 | 60 min |
| Season 4 | Episode 11 | The Wolf Equation | 1977-03-30 | 60 min |
| Season 4 | Episode 12 | The Dawn of the Solar Age | 1977-04-20 | 60 min |
| Season 4 | Episode 13 | The Business of Extinction | 1977-04-20 | 60 min |
| Season 4 | Episode 14 | The Red Planet | 1977-04-27 | 60 min |
| Season 4 | Episode 15 | Tongues of Men (1) | 1977-05-11 | 60 min |
| Season 4 | Episode 16 | Tongues of Men (2) | 1977-05-18 | 60 min |
| Season 4 | Episode 17 | Linus Pauling: Crusading Scientist | 1977-06-01 | 60 min |
| Season 4 | Episode 18 | Across the Silent Barrier | 1977-06-22 | 60 min |
| Season 4 | Episode 19 | The New Healers | 1977-06-29 | 60 min |
| Season 4 | Episode 20 | The Green Machine | 1978-01-11 | 60 min |
| Season 5 | Episode 1 | In the Event of Catastrophe | 1978-01-04 | 60 min |
| Season 5 | Episode 2 | Blueprints in the Bloodstream | 1978-01-18 | 60 min |
| Season 5 | Episode 3 | One Small Step (1) | 1978-01-25 | 60 min |
| Season 5 | Episode 4 | The Final Frontier (2) | 1978-02-01 | 60 min |
| Season 5 | Episode 5 | BaMiki BaNdula: Children of the Forest | 1978-02-15 | 60 min |
| Season 5 | Episode 6 | Trial of Denton Cooley | 1978-02-22 | 60 min |
| Season 5 | Episode 7 | The Great Wine Revolution | 1978-03-01 | 60 min |
| Season 5 | Episode 8 | The Case of the Ancient Astronauts | 1978-03-08 | 60 min |
| Season 5 | Episode 9 | The Mind Machines | 1978-03-22 | 60 min |
| Season 5 | Episode 10 | Icarus' Children | 1978-03-29 | 60 min |
| Season 5 | Episode 11 | Still Waters | 1978-04-12 | 60 min |
| Season 5 | Episode 12 | Battle for the Acropolis | 1978-04-19 | 60 min |
| Season 5 | Episode 13 | Road to Happiness | 1978-05-03 | 60 min |
| Season 5 | Episode 14 | Light of the 21st Century | 1978-05-10 | 60 min |
| Season 5 | Episode 15 | The Insect Alternative | 1978-05-24 | 60 min |
| Season 5 | Episode 16 | The Desert's Edge | 1978-05-31 | 60 min |
| Season 5 | Episode 17 | The Tse Tse Trap | 1978-06-07 | 60 min |
| Season 5 | Episode 18 | Memories from Eden | 1978-06-14 | 60 min |
| Season 5 | Episode 19 | A Whisper from Space | 1978-06-21 | 60 min |
| Season 5 | Episode 20 | Alaska: The Closing Frontier | 1978-06-28 | 60 min |
| Season 6 | Episode 1 | Black Tide | 1979-01-04 | 60 min |
| Season 6 | Episode 2 | Long Walk of Fred Young | 1979-01-11 | 60 min |
| Season 6 | Episode 3 | A World of Difference | 1979-01-18 | 60 min |
| Season 6 | Episode 4 | Cashing in on the Ocean | 1979-02-01 | 60 min |
| Season 6 | Episode 5 | Patterns from the Past | 1979-02-08 | 60 min |
| Season 6 | Episode 6 | The Invisible Flame | 1979-02-22 | 60 min |
| Season 6 | Episode 7 | The End of the Rainbow | 1979-03-01 | 60 min |
| Season 6 | Episode 8 | The Beersheva Experiment | 1979-03-08 | 60 min |
| Season 6 | Episode 9 | Einstein | 1979-03-15 | 60 min |
| Season 6 | Episode 10 | The Keys of Paradise | 1979-03-29 | 60 min |
| Season 6 | Episode 11 | A Plague on our Children | 1979-10-02 | 60 min |
| Season 6 | Episode 12 | Life on a Silken Thread | 1979-10-09 | 60 min |
| Season 6 | Episode 13 | Sweet Solutions | 1979-10-16 | 60 min |
| Season 6 | Episode 14 | Race for the Gold | 1979-10-30 | 60 min |
| Season 6 | Episode 15 | All Part of the Game | 1979-11-06 | 60 min |
| Season 6 | Episode 16 | India: Machinery of Hope | 1979-11-20 | 60 min |
| Season 6 | Episode 17 | The Bridge that Spanned the World | 1979-12-04 | 60 min |
| Season 6 | Episode 18 | Termites to Telescopes | 1979-12-11 | 60 min |
| Season 6 | Episode 19 | Blindness: Five Points of Views | 1979-12-18 | 60 min |
| Season 7 | Episode 1 | The Elusive Illness | 1980-01-15 | 60 min |
| Season 7 | Episode 2 | A is for Atom, B is for Bomb | 1980-01-22 | 60 min |
| Season 7 | Episode 3 | Living Machines | 1980-02-05 | 60 min |
| Season 7 | Episode 4 | Portrait of a Killer | 1980-02-19 | 60 min |
| Season 7 | Episode 5 | Umealit: The Whale Hunters | 1980-03-04 | 60 min |
| Season 7 | Episode 6 | The Safety Factor | 1980-03-11 | 60 min |
| Season 7 | Episode 7 | A Mediterranean Prospect | 1980-03-18 | 60 min |
| Season 7 | Episode 8 | Mr. Ludwig's Tropical Dreamland | 1980-03-25 | 60 min |
| Season 7 | Episode 9 | The Pinks and the Blues | 1980-09-30 | 60 min |
| Season 7 | Episode 10 | The Cancer Detectives of Lin Xian | 1980-10-07 | 60 min |
| Season 7 | Episode 11 | The Sea Behind the Dunes | 1980-10-14 | 60 min |
| Season 7 | Episode 12 | Do We Really Need the Rockies? | 1980-10-28 | 60 min |
| Season 7 | Episode 13 | The Big IF | 1980-11-04 | 60 min |
| Season 7 | Episode 14 | Voyager: Jupiter & Beyond | 1980-11-11 | 60 min |
| Season 7 | Episode 15 | The Wizard Who Spat on the Floor | 1980-11-18 | 60 min |
| Season 7 | Episode 16 | The Water Crisis | 1980-11-25 | 60 min |
| Season 7 | Episode 17 | Moving Still | 1980-12-02 | 60 min |
| Season 7 | Episode 18 | A Touch of Sensitivity | 1980-12-09 | 60 min |
| Season 7 | Episode 19 | The Red Deer of Rhum | 1980-12-23 | 60 min |
| Season 7 | Episode 20 | It's About Time | 1980-12-30 | 60 min |
| Season 8 | Episode 1 | Doctors of Nigeria | 1981-01-06 | 60 min |
| Season 8 | Episode 2 | Message in the Rocks | 1981-01-20 | 60 min |
| Season 8 | Episode 3 | The Dead Sea Lives | 1981-01-27 | 60 min |
| Season 8 | Episode 4 | Anatomy of a Volcano | 1981-02-10 | 60 min |
| Season 8 | Episode 5 | The Science of Murder | 1981-02-17 | 60 min |
| Season 8 | Episode 6 | The Malady of Health Care | 1981-02-24 | 60 min |
| Season 8 | Episode 7 | Beyond the Milky Way | 1981-03-03 | 60 min |
| Season 8 | Episode 8 | The Asteroid and the Dinosaur | 1981-03-10 | 60 min |
| Season 8 | Episode 9 | Animal Olympians | 1981-03-17 | 60 min |
| Season 8 | Episode 10 | Resolution on Saturn | 1981-08-28 | 60 min |
| Season 8 | Episode 11 | Computers, Spies & Private LIves | 1981-09-27 | 60 min |
| Season 8 | Episode 12 | Why America Burns | 1981-10-04 | 60 min |
| Season 8 | Episode 13 | The Great Violin Mystery | 1981-10-11 | 60 min |
| Season 8 | Episode 14 | Cosmic Fire | 1981-10-18 | 60 min |
| Season 8 | Episode 15 | Locusts: War Without End | 1981-10-25 | 60 min |
| Season 8 | Episode 16 | Did Darwin Get It Wrong? | 1981-11-01 | 60 min |
| Season 8 | Episode 17 | Artists in the Lab | 1981-11-15 | 60 min |
| Season 8 | Episode 18 | Notes of a Biology Watcher: A Film with Lewis Thomas | 1981-11-22 | 60 min |
| Season 8 | Episode 19 | City Spaces, Human Places | 1981-11-29 | 60 min |
| Season 8 | Episode 20 | Twins | 1981-12-06 | 60 min |
| Season 9 | Episode 1 | Salmon on the Run | 1982-01-10 | 60 min |
| Season 9 | Episode 2 | Test-Tube Babies: A Daughter for Judy | 1982-01-17 | 60 min |
| Season 9 | Episode 3 | Field Guide to Roger Tory Peterson | 1982-01-24 | 60 min |
| Season 9 | Episode 4 | The Hunt for the Legion Killer | 1982-01-31 | 60 min |
| Season 9 | Episode 5 | Finding a Voice | 1982-02-07 | 60 min |
| Season 9 | Episode 6 | The Television Explosion | 1982-02-14 | 60 min |
| Season 9 | Episode 7 | Life: Patent Pending | 1982-02-28 | 60 min |
| Season 9 | Episode 8 | Palace of Delights | 1982-03-07 | 60 min |
| Season 9 | Episode 9 | Animal Imposters | 1982-03-14 | 60 min |
| Season 9 | Episode 10 | Aging: The Methuselah Syndrome | 1982-03-28 | 60 min |
| Season 9 | Episode 11 | The Case of the UFOs | 1982-10-12 | 60 min |
| Season 9 | Episode 12 | The Fragile Mountain | 1982-10-19 | 60 min |
| Season 9 | Episode 13 | Here's Looking at You Kid | 1982-11-09 | 60 min |
| Season 9 | Episode 14 | Adventures of Teenage Scientists | 1982-11-16 | 60 min |
| Season 9 | Episode 15 | The Cobalt Blues | 1982-11-23 | 60 min |
| Season 9 | Episode 16 | Goodbye Louisiana | 1982-11-30 | 60 min |
| Season 9 | Episode 17 | Whale Watch | 1982-12-07 | 60 min |
| Season 9 | Episode 18 | Tracking the Supertrains | 1982-12-14 | 60 min |
| Season 10 | Episode 1 | Hawaii: Crucible of Life | 1983-01-18 | 60 min |
| Season 10 | Episode 2 | The Pleasure of Finding Things Out | 1983-01-25 | 60 min |
| Season 10 | Episode 3 | Lassa Fever | 1983-02-08 | 60 min |
| Season 10 | Episode 4 | The Miracle of Life | 1983-02-15 | 60 min |
| Season 10 | Episode 5 | Asbestos: A Lethal Legacy | 1983-03-01 | 60 min |
| Season 10 | Episode 6 | City of Coral | 1983-03-08 | 60 min |
| Season 10 | Episode 7 | Fat Chance in a Thin World | 1983-03-22 | 60 min |
| Season 10 | Episode 8 | Sixty Minutes to Meltdown | 1983-03-29 | 60 min |
| Season 10 | Episode 9 | Signs of the Apes, Songs of the Whales | 1983-10-11 | 60 min |
| Season 10 | Episode 10 | The Artificial Heart | 1983-10-18 | 60 min |
| Season 10 | Episode 11 | Talking Turtle | 1983-10-25 | 60 min |
| Season 10 | Episode 12 | Papua New Guinea: Anthropology on Trial | 1983-11-01 | 60 min |
| Season 10 | Episode 13 | To Live Until You Die: The Work of Elizabeth Kubler-Ross | 1983-11-08 | 60 min |
| Season 10 | Episode 14 | A Magic Way of Going: The Story of Thoroughbreds | 1983-11-15 | 60 min |
| Season 10 | Episode 15 | A Normal Face: The Wonders of Plastic Surgery | 1983-11-22 | 60 min |
| Season 10 | Episode 16 | Captives of Care | 1983-11-25 | 60 min |
| Season 10 | Episode 17 | Twenty-Five Years in Space | 1983-12-06 | 60 min |
| Season 10 | Episode 18 | Nuclear Strategy for Beginners | 1983-12-13 | 60 min |
| Season 10 | Episode 19 | The Climate Crisis | 1983-12-20 | 60 min |
| Season 10 | Episode 20 | Eyes Over China | 1983-12-27 | 60 min |
| Season 10 | Episode 21 | Alcoholism: Life Under the Influence | 1984-01-10 | 60 min |
| Season 11 | Episode 1 | The Case of ESP | 1984-01-17 | 60 min |
| Season 11 | Episode 2 | Antarctica: Earth's Last Frontier | 1984-01-31 | 60 min |
| Season 11 | Episode 3 | China's Only Child | 1984-02-14 | 60 min |
| Season 11 | Episode 4 | Will I Walk Again? | 1984-02-28 | 60 min |
| Season 11 | Episode 5 | Visions of the Deep: The Underwater World of Al Giddings | 1984-03-06 | 60 min |
| Season 11 | Episode 6 | Down on the Farm | 1984-03-20 | 60 min |
| Season 11 | Episode 7 | Make My People Live: The Crisis in Indian Health Care | 1984-03-27 | 60 min |
| Season 11 | Episode 8 | The World According to Weiskoff | 1984-04-30 | 60 min |
| Season 11 | Episode 9 | Space Bridge to Moscow | 1984-10-02 | 60 min |
| Season 11 | Episode 10 | The National Science Test I | 1984-10-16 | 60 min |
| Season 11 | Episode 11 | Fountains of Paradise | 1984-10-20 | 60 min |
| Season 11 | Episode 12 | The Mystery of Yellow Rain | 1984-10-30 | 60 min |
| Season 11 | Episode 13 | The Nomads of the Rain Forest | 1984-11-06 | 60 min |
| Season 11 | Episode 14 | Farmers of the Sea | 1984-11-13 | 60 min |
| Season 11 | Episode 15 | Frontiers of Plastic Surgery | 1984-11-20 | 60 min |
| Season 11 | Episode 16 | Space Women | 1984-11-27 | 60 min |
| Season 11 | Episode 17 | Jaws: The True Story | 1984-12-04 | 60 min |
| Season 11 | Episode 18 | Acid Rain: New Bad News | 1984-12-11 | 60 min |
| Season 11 | Episode 19 | Stephen Jay Gould: This View of Life | 1984-12-18 | 60 min |
| Season 11 | Episode 20 | The Garden of Inheritance | 1985-01-08 | 60 min |
| Season 12 | Episode 1 | Edgerton and His Incredible Seeing Machines | 1985-01-15 | 60 min |
| Season 12 | Episode 2 | Global Village | 1985-01-22 | 60 min |
| Season 12 | Episode 3 | Conquest of the Parasites | 1985-01-29 | 60 min |
| Season 12 | Episode 4 | In the Land of the Polar Bears | 1985-02-05 | 60 min |
| Season 12 | Episode 5 | AIDS: Chapter One | 1985-02-12 | 60 min |
| Season 12 | Episode 6 | The Shape of Things | 1985-02-19 | 60 min |
| Season 12 | Episode 7 | Baby Talk | 1985-02-26 | 60 min |
| Season 12 | Episode 8 | The Mathematical Mystery Tour | 1985-03-05 | 60 min |
| Season 12 | Episode 9 | Child's Play: Prodigies and Possibilities | 1985-03-12 | 60 min |
| Season 12 | Episode 10 | Monarch of the Mountains | 1985-03-19 | 60 min |
| Season 12 | Episode 11 | The National Science Test II | 1985-10-08 | 60 min |
| Season 12 | Episode 12 | Seeds of Tomorrow | 1985-10-15 | 60 min |
| Season 12 | Episode 13 | What Einstein Never Knew | 1985-10-22 | 60 min |
| Season 12 | Episode 14 | The Robot Revolution? | 1985-10-29 | 60 min |
| Season 12 | Episode 15 | The Magic of Special Effects | 1985-11-05 | 60 min |
| Season 12 | Episode 16 | Child Survival: The Silent Emergency | 1985-11-12 | 60 min |
| Season 12 | Episode 17 | Tornado! | 1985-11-19 | 60 min |
| Season 12 | Episode 18 | The Genetic Gamble | 1985-11-26 | 60 min |
| Season 12 | Episode 19 | Animal Architects | 1985-12-03 | 60 min |
| Season 12 | Episode 20 | The Plane that Changed the World | 1985-12-17 | 60 min |
| Season 13 | Episode 1 | Halley's Comet: Once in a Lifetime | 1986-01-21 | 60 min |
| Season 13 | Episode 2 | Goddess of the Earth | 1986-01-28 | 60 min |
| Season 13 | Episode 3 | Horsemen of China | 1986-02-04 | 60 min |
| Season 13 | Episode 4 | Life's First Feelings | 1986-02-11 | 60 min |
| Season 13 | Episode 5 | The Case of the Frozen Addict | 1986-02-18 | 60 min |
| Season 13 | Episode 6 | Toxic Trials | 1986-02-25 | 60 min |
| Season 13 | Episode 7 | Skydive to the Rain Forest | 1986-03-04 | 60 min |
| Season 13 | Episode 8 | Return of the Osprey | 1986-03-11 | 60 min |
| Season 13 | Episode 9 | The Rise of a Wonder Drug | 1986-03-18 | 60 min |
| Season 13 | Episode 10 | When Wonder Drugs Don't Work | 1986-03-25 | 60 min |
| Season 13 | Episode 11 | Visions of Star Wars | 1986-04-22 | 60 min |
| Season 13 | Episode 12 | The Search for the Disappeared | 1986-10-14 | 60 min |
| Season 13 | Episode 13 | The Planet that Got Knocked on its Side | 1986-10-21 | 60 min |
| Season 13 | Episode 14 | High-Tech Babies | 1986-11-04 | 60 min |
| Season 13 | Episode 15 | Can AIDS Be Stopped? | 1986-11-11 | 60 min |
| Season 13 | Episode 16 | Is Anybody Out There? | 1986-11-18 | 60 min |
| Season 13 | Episode 17 | Mystery of the Animal Pathfinders | 1986-11-25 | 60 min |
| Season 13 | Episode 18 | Are You Swimming in a Sewer? | 1986-12-02 | 60 min |
| Season 13 | Episode 19 | Sail Wars! | 1986-12-09 | 60 min |
| Season 13 | Episode 20 | Leprosy Can Be Cured! | 1986-12-16 | 60 min |
| Season 13 | Episode 21 | How Babies Get Made | 1987-01-13 | 60 min |
| Season 14 | Episode 1 | Countdown to the Invisible Universe | 1987-01-20 | 60 min |
| Season 14 | Episode 2 | Children of Eve | 1987-01-27 | 60 min |
| Season 14 | Episode 3 | Why Planes Crash | 1987-02-03 | 60 min |
| Season 14 | Episode 4 | Orangutans of the Rain Forest | 1987-02-10 | 60 min |
| Season 14 | Episode 5 | Freud Under Analysis | 1987-02-17 | 60 min |
| Season 14 | Episode 6 | The Hole in the Sky | 1987-02-24 | 60 min |
| Season 14 | Episode 7 | Confessions of a Weaponeer | 1987-03-03 | 60 min |
| Season 14 | Episode 8 | Great Moments from NOVA | 1987-03-10 | 60 min |
| Season 14 | Episode 9 | Will the World Starve? | 1987-03-24 | 60 min |
| Season 14 | Episode 10 | The Desert Doesn't Bloom Here Anymore | 1987-03-31 | 60 min |
| Season 14 | Episode 11 | Rocky Road to Jupiter | 1987-04-07 | 60 min |
| Season 14 | Episode 12 | Death of a Star | 1987-10-06 | 60 min |
| Season 14 | Episode 13 | Spy Machines | 1987-10-13 | 60 min |
| Season 14 | Episode 14 | Hidden Power of Plants | 1987-10-20 | 60 min |
| Season 14 | Episode 15 | Japan's American Genius | 1987-10-27 | 60 min |
| Season 14 | Episode 16 | A Man, A Plan, A Canal, Panama | 1987-11-03 | 60 min |
| Season 14 | Episode 17 | Volcano! | 1987-11-10 | 60 min |
| Season 14 | Episode 18 | How Good is Soviet Science? | 1987-11-17 | 60 min |
| Season 14 | Episode 19 | Ancient Treasures from the Deep | 1987-12-01 | 60 min |
| Season 14 | Episode 20 | Riddle of the Joints | 1987-12-08 | 60 min |
| Season 14 | Episode 21 | Secrets of the Lost Red Paint People | 1987-12-15 | 60 min |
| Season 15 | Episode 1 | Top Gun and Beyond | 1988-01-19 | 60 min |
| Season 15 | Episode 12 | How to Create a Junk Food | 1988-01-26 | 60 min |
| Season 15 | Episode 13 | Buried in Ice | 1988-02-02 | 60 min |
| Season 15 | Episode 14 | Why Planes Burn | 1988-02-09 | 60 min |
| Season 15 | Episode 15 | Battles in the War on Cancer: A Wonder Drug on Trial | 1988-02-23 | 60 min |
| Season 15 | Episode 16 | Battles in the War on Cancer: Breast Cancer - Turning the Tide | 1988-03-01 | 60 min |
| Season 15 | Episode 17 | Mystery of the Master Builders | 1988-03-08 | 60 min |
| Season 15 | Episode 18 | Whale Rescue | 1988-03-15 | 60 min |
| Season 15 | Episode 19 | The Man Who Loved Numbers | 1988-03-22 | 60 min |
| Season 15 | Episode 20 | Race for the Superconductor | 1988-03-29 | 60 min |
| Season 15 | Episode 21 | Can You Still Get Polio? | 1988-04-05 | 60 min |
| Season 16 | Episode 1 | Pioneers of Surgery: The Brutal Craft | 1988-09-06 | 60 min |
| Season 16 | Episode 2 | Pioneers of Surgery: Into the Heart | 1988-09-13 | 60 min |
| Season 16 | Episode 3 | Pioneers of Surgery: New Organs for Old | 1988-09-20 | 60 min |
| Season 16 | Episode 4 | Pioneers of Surgery: Beyond the Knife | 1988-09-27 | 60 min |
| Season 16 | Episode 5 | Can the Vatican Save the Sistine Chapel? | 1988-10-04 | 60 min |
| Season 16 | Episode 6 | Can the Next President Win the Space Race? | 1988-10-11 | 60 min |
| Season 16 | Episode 7 | Do Scientists Cheat? | 1988-10-25 | 60 min |
| Season 16 | Episode 8 | Who Shot President Kennedy? | 1988-11-15 | 60 min |
| Season 16 | Episode 9 | The Light Stuff | 1988-11-22 | 60 min |
| Season 16 | Episode 10 | The All-American Bear | 1988-12-06 | 60 min |
| Season 16 | Episode 11 | Can We Make a Better Doctor? | 1988-12-13 | 60 min |
| Season 16 | Episode 12 | Hot Enough for You? | 1989-01-17 | 60 min |
| Season 16 | Episode 13 | The Last Journey of a Genius | 1989-01-24 | 60 min |
| Season 16 | Episode 14 | The Strange New Science of Chaos | 1989-01-31 | 60 min |
| Season 16 | Episode 15 | Back to Chernobyl | 1989-02-14 | 60 min |
| Season 16 | Episode 16 | God, Darwin and the Dinosaurs | 1989-02-21 | 60 min |
| Season 16 | Episode 17 | Adrift on the Gulf Stream | 1989-02-28 | 60 min |
| Season 16 | Episode 18 | Secrets of Easter Island (1) | 1989-03-07 | 60 min |
| Season 16 | Episode 19 | Legends of Easter Island (2) | 1989-03-07 | 60 min |
| Season 16 | Episode 20 | The World Is Full of Oil! | 1989-03-21 | 60 min |
| Season 16 | Episode 21 | Confronting the Killer Gene | 1989-03-28 | 60 min |
| Season 17 | Episode 1 | The Hidden City | 1989-10-03 | 60 min |
| Season 17 | Episode 2 | The Controversial Dr. Koop | 1989-10-10 | 60 min |
| Season 17 | Episode 3 | Design Wars! | 1989-10-17 | 60 min |
| Season 17 | Episode 4 | Echoes of War | 1989-10-24 | 60 min |
| Season 17 | Episode 5 | Decoding the Book of Life | 1989-10-31 | 60 min |
| Season 17 | Episode 6 | Hurricane! | 1989-11-07 | 60 min |
| Season 17 | Episode 7 | Will Venice Survive Its Rescue | 1989-11-14 | 60 min |
| Season 17 | Episode 8 | What Is Music | 1989-11-21 | 60 min |
| Season 17 | Episode 9 | Yellowstone's Burning Question | 1989-12-05 | 60 min |
| Season 17 | Episode 10 | The Schoolboys Who Cracked the Soviet Secret | 1989-12-12 | 60 min |
| Season 17 | Episode 11 | Poison in the Rockies | 1990-01-09 | 60 min |
| Season 17 | Episode 12 | Race for the Top | 1990-01-23 | 60 min |
| Season 17 | Episode 13 | Disguises of War | 1990-02-06 | 60 min |
| Season 17 | Episode 14 | The Bomb's Lethal Legacy | 1990-02-13 | 60 min |
| Season 17 | Episode 15 | The Big Spill | 1990-02-27 | 60 min |
| Season 17 | Episode 16 | The Genius That Was China: Rise of the Dragon | 1990-03-15 | 60 min |
| Season 17 | Episode 17 | The Genius That Was China: Empires in Collision | 1990-03-20 | 60 min |
| Season 17 | Episode 18 | The Genius That Was China: The Threat from Japan | 1990-03-27 | 60 min |
| Season 17 | Episode 19 | The Genius That Was China: Will the Dragon Rise Again? | 1990-04-03 | 60 min |
| Season 18 | Episode 1 | The KGB, The Computer and Me | 1990-10-03 | 60 min |
| Season 18 | Episode 2 | Neptune's Cold Fury | 1990-10-09 | 60 min |
| Season 18 | Episode 3 | To Boldly Go... | 1990-10-16 | 60 min |
| Season 18 | Episode 4 | Poisoned Winds of War | 1990-10-23 | 60 min |
| Season 18 | Episode 5 | The Blimp is Back! | 1990-10-30 | 60 min |
| Season 18 | Episode 6 | Earthquake! | 1990-11-06 | 60 min |
| Season 18 | Episode 7 | Killing Machines | 1990-11-13 | 60 min |
| Season 18 | Episode 8 | Can the Elephant Be Saved? | 1990-11-20 | 60 min |
| Season 18 | Episode 9 | We Know Where You Live | 1990-11-27 | 60 min |
| Season 18 | Episode 10 | In the Land of the Llamas | 1990-12-04 | 60 min |
| Season 18 | Episode 11 | What's Killing the Children? | 1990-12-18 | 60 min |
| Season 18 | Episode 12 | Return to Mt. St. Helens | 1991-01-08 | 60 min |
| Season 18 | Episode 13 | ConFusion in a Jar | 1991-04-30 | 60 min |
| Season 18 | Episode 14 | The Hunt for China's Dinosaurs | 1991-02-05 | 60 min |
| Season 18 | Episode 15 | Case of the Flying Dinosaur | 1991-02-12 | 60 min |
| Season 18 | Episode 16 | T-Rex Exposed | 1991-02-19 | 60 min |
| Season 18 | Episode 17 | The Russian Right Stuff: The Invisible Spaceman | 1991-02-26 | 60 min |
| Season 18 | Episode 18 | The Russian Right Stuff: The Dark Side of the Moon | 1991-02-27 | 60 min |
| Season 18 | Episode 19 | The Russian Right Stuff: The Mission | 1991-02-28 | 60 min |
| Season 18 | Episode 20 | Swimming with Whales | 1991-03-05 | 60 min |
| Season 18 | Episode 21 | The Chip vs. the Chessmaster | 1991-03-26 | 60 min |
| Season 19 | Episode 1 | Sex, Lies and Toupee Tape | 1991-10-01 | 60 min |
| Season 19 | Episode 2 | So You Want to Be a Doctor? | 1991-10-09 | 60 min |
| Season 19 | Episode 3 | Secrets of the Dead Sea Scrolls | 1991-10-15 | 60 min |
| Season 19 | Episode 4 | Suicide Mission to Chernobyl | 1991-10-22 | 60 min |
| Season 19 | Episode 5 | Taller Than Everest? | 1991-11-05 | 60 min |
| Season 19 | Episode 6 | Fastest Planes in the Sky | 1991-11-12 | 60 min |
| Season 19 | Episode 7 | Avoiding the Surgeon's Knife | 1991-12-03 | 60 min |
| Season 19 | Episode 8 | Skyscraper! A NOVA Special | 1991-12-10 | 80 min |
| Season 19 | Episode 9 | The Fine Art of Faking It | 1991-12-17 | 60 min |
| Season 19 | Episode 10 | Hell Fighters of Kuwait | 1992-01-14 | 60 min |
| Season 19 | Episode 11 | Submarine! | 1992-01-21 | 60 min |
| Season 19 | Episode 12 | Saddam's War on Wildlife | 1992-01-28 | 60 min |
| Season 19 | Episode 13 | What Smells? | 1992-02-11 | 60 min |
| Season 19 | Episode 14 | Can You Believe TV Ratings? | 1992-02-18 | 60 min |
| Season 19 | Episode 15 | Making a Dishonest Buck | 1992-03-03 | 60 min |
| Season 19 | Episode 16 | Rescuing Baby Whales | 1992-03-10 | 60 min |
| Season 19 | Episode 17 | An Astronaut's View of the Earth | 1992-03-17 | 60 min |
| Season 19 | Episode 18 | Eclipse of the Century | 1992-03-24 | 60 min |
| Season 20 | Episode 1 | Animal Olympians II | 1992-08-25 | 60 min |
| Season 20 | Episode 2 | The Genius Behind the Bomb | 1992-09-29 | 60 min |
| Season 20 | Episode 3 | Mind of a Serial Killer | 1992-10-13 | 60 min |
| Season 20 | Episode 4 | Search for the First Americans | 1992-10-20 | 60 min |
| Season 20 | Episode 5 | Rafting Through the Grand Canyon | 1992-10-27 | 60 min |
| Season 20 | Episode 6 | This Old Pyramid | 1992-11-04 | 90 min |
| Season 20 | Episode 7 | Iceman | 1992-11-10 | 60 min |
| Season 20 | Episode 8 | Private Lives of Dolphins | 1992-11-17 | 60 min |
| Season 20 | Episode 9 | Brain Transplant | 1992-12-01 | 60 min |
| Season 20 | Episode 10 | Can You Stop People from Drinking? | 1992-12-22 | 60 min |
| Season 20 | Episode 11 | Sex and the Single Rhino | 1992-12-29 | 60 min |
| Season 20 | Episode 12 | The Hunt for Saddam's Secret Weapons | 1993-01-05 | 60 min |
| Season 20 | Episode 13 | Can Bombing Win a War? | 1993-01-19 | 60 min |
| Season 20 | Episode 14 | The Deadly Deception | 1993-01-26 | 60 min |
| Season 20 | Episode 15 | Nazis and the Russian Bomb | 1993-02-02 | 60 min |
| Season 20 | Episode 16 | In the Path of a Killer Volcano | 1993-02-09 | 60 min |
| Season 20 | Episode 17 | Can Science Build a Champion Athlete? | 1993-02-16 | 60 min |
| Season 20 | Episode 18 | Diving for Pirate Gold | 1993-02-23 | 60 min |
| Season 20 | Episode 19 | Murder, Rape and DNA | 1993-03-02 | 60 min |
| Season 20 | Episode 20 | The Lost Tribe | 1993-03-30 | 60 min |
| Season 21 | Episode 1 | The NOVA Quiz | 1993-10-05 | 60 min |
| Season 21 | Episode 2 | Wanted: Butch and Sundance | 1993-10-12 | 60 min |
| Season 21 | Episode 3 | Secrets of the Psychics | 1993-10-19 | 60 min |
| Season 21 | Episode 4 | Dying to Breathe | 1993-10-26 | 60 min |
| Season 21 | Episode 5 | Shadow of the Condor | 1993-11-02 | 60 min |
| Season 21 | Episode 6 | The Real Jurassic Park | 1993-11-09 | 60 min |
| Season 21 | Episode 7 | Roller Coaster! | 1993-11-16 | 60 min |
| Season 21 | Episode 8 | Mysterious Crash of Flight 201 | 1993-11-30 | 60 min |
| Season 21 | Episode 9 | Great Moments from NOVA | 1993-12-07 | 90 min |
| Season 21 | Episode 10 | The Best Mind Since Einstein | 1993-12-21 | 60 min |
| Season 21 | Episode 11 | Stranger in the Mirror | 1993-12-28 | 60 min |
| Season 21 | Episode 12 | Codebreakers | 1994-01-18 | 60 min |
| Season 21 | Episode 13 | Dinosaurs of the Gobi | 1994-01-25 | 60 min |
| Season 21 | Episode 14 | Daredevils of the Sky | 1994-02-01 | 60 min |
| Season 21 | Episode 15 | Journey to Kilimanjaro | 1994-02-08 | 60 min |
| Season 21 | Episode 16 | Can Chimps Talk? | 1994-02-15 | 60 min |
| Season 21 | Episode 17 | In Search of Human Origins, Part One | 1994-02-28 | 60 min |
| Season 21 | Episode 18 | In Search of Human Origins, Part Two | 1994-03-01 | 60 min |
| Season 21 | Episode 19 | In Search of Human Origins, Part Three | 1994-03-02 | 60 min |
| Season 21 | Episode 20 | Can China Kick the Habit? | 1994-04-12 | 60 min |
| Season 21 | Episode 21 | Aircraft Carrier! | 1994-04-19 | 60 min |
| Season 22 | Episode 1 | The Great Wildlife Heist | 1994-10-11 | 60 min |
| Season 22 | Episode 2 | Secret of the Wild Child | 1994-10-18 | 60 min |
| Season 22 | Episode 3 | Haunted Cry of a Long Gone Bird | 1994-10-25 | 60 min |
| Season 22 | Episode 4 | What's New About Menopause | 1994-11-01 | 60 min |
| Season 22 | Episode 5 | The Tribe that Time Forgot | 1994-11-08 | 60 min |
| Season 22 | Episode 6 | Killer Quake! | 1994-11-15 | 60 min |
| Season 22 | Episode 7 | Buried in Ash | 1994-11-29 | 60 min |
| Season 22 | Episode 8 | Rescue Mission in Space | 1994-12-06 | 60 min |
| Season 22 | Episode 9 | Journey to the Sacred Sea | 1994-12-20 | 60 min |
| Season 22 | Episode 10 | In Search of the First Language | 1994-12-27 | 60 min |
| Season 22 | Episode 11 | Mammoths of the Ice Age | 1995-01-09 | 60 min |
| Season 22 | Episode 12 | Vikings in America | 1995-01-24 | 60 min |
| Season 22 | Episode 13 | Ants: Little Creatures Who Run the World | 1995-01-31 | 60 min |
| Season 22 | Episode 14 | Nazi Designers of Death | 1995-02-07 | 60 min |
| Season 22 | Episode 15 | Siamese Twins | 1995-02-14 | 60 min |
| Season 22 | Episode 16 | Mystery of the Senses: Hearing | 1995-02-19 | 60 min |
| Season 22 | Episode 17 | Mystery of the Senses: Smell | 1995-02-20 | 60 min |
| Season 22 | Episode 18 | Mystery of the Senses: Taste | 1995-02-21 | 60 min |
| Season 22 | Episode 19 | Mystery of the Senses: Touch | 1995-02-22 | 60 min |
| Season 22 | Episode 20 | Mystery of the Senses: Vision | 1995-02-22 | 60 min |
| Season 22 | Episode 21 | The Universe Within | 1995-03-07 | 60 min |
| Season 22 | Episode 22 | Making of a Doctor | 1995-05-03 | 60 min |
| Season 22 | Episode 23 | Fast Cars | 1995-05-23 | 60 min |
| Season 23 | Episode 1 | Anastasia Dead or Alive? | 1995-10-10 | 60 min |
| Season 23 | Episode 2 | Venus Unveiled | 1995-10-17 | 60 min |
| Season 23 | Episode 3 | Hawaii Born of Fire | 1995-10-24 | 60 min |
| Season 23 | Episode 4 | The Doomsday Asteroid | 1995-10-31 | 60 min |
| Season 23 | Episode 5 | Lightning! | 1995-11-07 | 60 min |
| Season 23 | Episode 6 | Hunt for the Serial Arsonist | 1995-11-14 | 60 min |
| Season 23 | Episode 7 | Treasures of the Great Barrier Reef | 1995-11-28 | 60 min |
| Season 23 | Episode 8 | Race to Catch a Buckyball | 1995-12-19 | 60 min |
| Season 23 | Episode 9 | Can Buildings Make You Sick? | 1995-12-26 | 60 min |
| Season 23 | Episode 10 | Terror in the Mine Fields | 1996-01-09 | 60 min |
| Season 23 | Episode 11 | The Day the Earth Shook | 1996-01-16 | 60 min |
| Season 23 | Episode 12 | B-29 Frozen in Time | 1996-01-30 | 60 min |
| Season 23 | Episode 13 | Ebola: The Plague Fighters | 1996-02-06 | 60 min |
| Season 23 | Episode 14 | War Machines of Tomorrow | 1996-02-20 | 60 min |
| Season 23 | Episode 15 | Kidnapped by U.F.O.'s? | 1996-02-27 | 60 min |
| Season 23 | Episode 16 | Flood! | 1996-03-26 | 60 min |
| Season 23 | Episode 17 | Dr. Spock the Baby Doc | 1996-04-02 | 60 min |
| Season 23 | Episode 18 | Warriors of the Amazon | 1996-04-09 | 60 min |
| Season 23 | Episode 19 | Bombing of America | 1996-04-16 | 60 min |
| Season 24 | Episode 1 | Einstein Revealed | 1996-10-01 | 60 min |
| Season 24 | Episode 2 | Lost City of Arabia | 1996-10-08 | 60 min |
| Season 24 | Episode 3 | Three Men and a Balloon | 1996-10-15 | 60 min |
| Season 24 | Episode 4 | Secrets of Making Money | 1996-10-22 | 60 min |
| Season 24 | Episode 5 | Top Gun Over Moscow | 1996-11-12 | 60 min |
| Season 24 | Episode 6 | Shark Attack | 1996-11-19 | 60 min |
| Season 24 | Episode 7 | Odyssey of Life: The Ultimate Journey | 1996-11-24 | 60 min |
| Season 24 | Episode 8 | Odyssey of Life: The Unknown World | 1996-11-25 | 60 min |
| Season 24 | Episode 9 | Odyssey of Life: The Photographer's Secrets | 1996-11-26 | 60 min |
| Season 24 | Episode 10 | Cracking the Ice Age | 1996-12-31 | 60 min |
| Season 24 | Episode 11 | Kaboom! | 1997-01-14 | 60 min |
| Season 24 | Episode 12 | Titanic's Lost Sister | 1997-01-28 | 60 min |
| Season 24 | Episode 13 | Secrets of Lost Empires (1): Stonehenge | 1997-02-11 | 60 min |
| Season 24 | Episode 14 | Secrets of Lost Empires (2): Inca | 1997-02-11 | 60 min |
| Season 24 | Episode 15 | Secrets of Lost Empires (3): Obelisk | 1997-02-12 | 60 min |
| Season 24 | Episode 16 | Secrets of Lost Empires (4): Colosseum | 1997-02-12 | 60 min |
| Season 24 | Episode 17 | Hunt for Alien Worlds | 1997-02-18 | 60 min |
| Season 24 | Episode 18 | Curse of T. Rex | 1997-02-25 | 60 min |
| Season 24 | Episode 19 | Cut to the Heart | 1997-04-08 | 60 min |
| Season 24 | Episode 20 | Kingdom of the Seahorse | 1997-04-15 | 60 min |
| Season 25 | Episode 1 | Coma | 1997-10-07 | 60 min |
| Season 25 | Episode 2 | Faster Than Sound | 1997-10-14 | 60 min |
| Season 25 | Episode 3 | Bomb Squad | 1997-10-21 | 60 min |
| Season 25 | Episode 4 | The Proof | 1997-10-28 | 60 min |
| Season 25 | Episode 5 | Wild Wolves | 1997-11-11 | 60 min |
| Season 25 | Episode 6 | Super Bridge | 1997-11-12 | 60 min |
| Season 25 | Episode 7 | Treasures of a Sunken City | 1997-11-18 | 60 min |
| Season 25 | Episode 8 | Avalanche! | 1997-11-25 | 60 min |
| Season 25 | Episode 9 | Danger in the Jet Stream | 1997-12-02 | 60 min |
| Season 25 | Episode 10 | Night Creatures of the Kalahari | 1998-01-06 | 60 min |
| Season 25 | Episode 11 | Mysterious Mummies of China | 1998-01-20 | 60 min |
| Season 25 | Episode 12 | Supersonic Spies | 1998-01-27 | 60 min |
| Season 25 | Episode 13 | Animal Hospital | 1998-02-03 | 60 min |
| Season 25 | Episode 14 | The Brain Eater | 1998-02-10 | 60 min |
| Season 25 | Episode 15 | Everest - The Death Zone | 1998-02-24 | 60 min |
| Season 25 | Episode 16 | Search for the Lost Cave People | 1998-03-31 | 60 min |
| Season 25 | Episode 17 | Warnings from the Ice | 1998-04-21 | 60 min |
| Season 25 | Episode 18 | Crocodiles! | 1998-04-28 | 60 min |
| Season 25 | Episode 19 | The Truth About Impotence | 1998-05-12 | 60 min |
| Season 26 | Episode 1 | Lost at Sea: The Search for Longitude | 1998-10-06 | 60 min |
| Season 26 | Episode 2 | Chasing El Niño | 1998-10-13 | 60 min |
| Season 26 | Episode 3 | Terror in Space | 1998-10-27 | 60 min |
| Season 26 | Episode 4 | Special Effects: Titanic and Beyond | 1998-11-03 | 60 min |
| Season 26 | Episode 5 | Deadly Shadow of Vesuvius | 1998-11-10 | 60 min |
| Season 26 | Episode 6 | Ice Mummies (1): Frozen in Heaven | 1998-11-24 | 60 min |
| Season 26 | Episode 7 | Ice Mummies (2): Siberian Ice Maiden | 1998-11-24 | 60 min |
| Season 26 | Episode 8 | Ice Mummies (3): Return of the Iceman | 1998-11-24 | 60 min |
| Season 26 | Episode 9 | Leopards of the Night | 1998-12-01 | 60 min |
| Season 26 | Episode 10 | The Perfect Pearl | 1998-12-29 | 60 min |
| Season 26 | Episode 11 | The Beast of Loch Ness | 1999-01-12 | 60 min |
| Season 26 | Episode 12 | Submarines, Secrets & Spies | 1999-01-19 | 60 min |
| Season 26 | Episode 13 | Everest: The Mystery of Mallory and Irvin | 1999-10-06 | 60 min |
| Season 26 | Episode 14 | Surviving AIDS | 1999-02-02 | 60 min |
| Season 26 | Episode 15 | Escape! Because Accidents Happen: Fire (1) | 1999-02-16 | 60 min |
| Season 26 | Episode 16 | Escape! Because Accidents Happen: Car Crash (2) | 1999-02-16 | 60 min |
| Season 26 | Episode 17 | Escape! Because Accidents Happen: Plane Crash (3) | 1999-02-17 | 60 min |
| Season 26 | Episode 18 | Escape! Because Accidents Happen: Abandon Ship (4) | 1999-02-17 | 60 min |
| Season 26 | Episode 19 | Battle Alert in the Gulf | 1999-02-23 | 60 min |
| Season 26 | Episode 20 | Volcanoes of the Deep | 1999-03-30 | 60 min |
| Season 26 | Episode 21 | To the Moon | 1999-07-13 | 60 min |
| Season 27 | Episode 1 | Fall of the Leaning Tower | 1999-10-05 | 60 min |
| Season 27 | Episode 2 | Time Travel | 1999-10-12 | 60 min |
| Season 27 | Episode 3 | The Killer's Trail | 1999-10-19 | 60 min |
| Season 27 | Episode 4 | Island of the Spirits | 1999-11-02 | 60 min |
| Season 27 | Episode 5 | Decoding Nazi Secrets | 1999-11-09 | 120 min |
| Season 27 | Episode 6 | Voyage of Doom | 1999-11-23 | 60 min |
| Season 27 | Episode 7 | Electric Heart | 1999-12-21 | 60 min |
| Season 27 | Episode 8 | Tales from the Hive | 2000-01-04 | 60 min |
| Season 27 | Episode 9 | Lost on Everest | 2000-01-18 | 60 min |
| Season 27 | Episode 10 | Secrets of Lost Empires: Medieval Siege | 2000-02-01 | 60 min |
| Season 27 | Episode 11 | Diamond Deception | 2000-02-01 | 60 min |
| Season 27 | Episode 12 | Secrets of Lost Empires: Pharaoh's Obelisk | 2000-02-08 | 60 min |
| Season 27 | Episode 13 | Trillion Dollar Bet | 2000-02-08 | 60 min |
| Season 27 | Episode 14 | Secrets of Lost Empires: Easter Island | 2000-02-15 | 60 min |
| Season 27 | Episode 15 | Mystery of the First Americans | 2000-02-15 | 60 min |
| Season 27 | Episode 16 | Secrets of Lost Empires: Roman Bath | 2000-02-22 | 60 min |
| Season 27 | Episode 17 | Lost Tribes of Israel | 2000-02-22 | 60 min |
| Season 27 | Episode 18 | Secrets of Lost Empires: China Bridge | 2000-02-29 | 60 min |
| Season 27 | Episode 19 | What's Up with the Weather? | 2000-04-18 | 60 min |
| Season 27 | Episode 20 | Stationed in the Stars | 2000-04-25 | 60 min |
| Season 27 | Episode 21 | The Vikings | 2000-05-09 | 60 min |
| Season 28 | Episode 1 | Lincoln's Secret Weapon | 2000-10-24 | 60 min |
| Season 28 | Episode 2 | Holocaust on Trial | 2000-10-31 | 60 min |
| Season 28 | Episode 3 | Hitler's Lost Sub | 2000-11-14 | 60 min |
| Season 28 | Episode 4 | Runaway Universe | 2000-11-21 | 60 min |
| Season 28 | Episode 5 | Garden of Eden | 2000-11-28 | 60 min |
| Season 28 | Episode 6 | Dying to Be Thin | 2000-12-12 | 60 min |
| Season 28 | Episode 7 | Japan's Secret Garden | 2000-12-18 | 60 min |
| Season 28 | Episode 8 | Sultan's Lost Treasure | 2001-01-16 | 60 min |
| Season 28 | Episode 9 | Vanished! | 2001-01-30 | 60 min |
| Season 28 | Episode 10 | Nazi Prison Escape | 2001-02-06 | 60 min |
| Season 28 | Episode 11 | Lost King of the Maya | 2001-02-13 | 60 min |
| Season 28 | Episode 12 | The Cancer Warrior | 2001-02-27 | 60 min |
| Season 28 | Episode 13 | Survivor M.D.: Tattooed Doctor | 2001-03-27 | 60 min |
| Season 28 | Episode 14 | Survivor M.D.: Second Opinions | 2001-04-03 | 60 min |
| Season 28 | Episode 15 | Survivor M.D.: Hearts & Minds | 2001-04-10 | 60 min |
| Season 28 | Episode 16 | Cracking the Code of Life | 2001-04-17 | 60 min |
| Season 28 | Episode 17 | Harvest of Fear | 2001-04-24 | 60 min |
| Season 29 | Episode 1 | Search for a Safe Cigarette | 2001-10-02 | 60 min |
| Season 29 | Episode 2 | 18 Ways to Make a Baby | 2001-10-09 | 60 min |
| Season 29 | Episode 3 | Secrets of the Mind (aka Phantoms in the Brain) | 2001-10-23 | 60 min |
| Season 29 | Episode 4 | Sex: Unknown | 2001-10-30 | 60 min |
| Season 29 | Episode 5 | Russia's Nuclear Warriors | 2001-11-06 | 60 min |
| Season 29 | Episode 6 | Bioterror | 2001-11-13 | 60 min |
| Season 29 | Episode 7 | Life's Greatest Miracle | 2001-11-20 | 60 min |
| Season 29 | Episode 8 | Methuselah Tree | 2001-12-11 | 60 min |
| Season 29 | Episode 9 | Flying Casanovas | 2001-12-25 | 60 min |
| Season 29 | Episode 10 | Death Star | 2002-01-08 | 60 min |
| Season 29 | Episode 11 | Neanderthals on Trial | 2002-01-22 | 60 min |
| Season 29 | Episode 12 | Fireworks! | 2002-02-05 | 60 min |
| Season 29 | Episode 13 | Secrets, Lies and Atomic Spies | 2002-02-05 | 60 min |
| Season 29 | Episode 14 | The Missing Link | 2002-02-26 | 60 min |
| Season 29 | Episode 15 | Shackleton's Voyage of Endurance | 2002-03-26 | 60 min |
| Season 29 | Episode 16 | Why the Towers Fell | 2002-04-30 | 60 min |
| Season 29 | Episode 17 | Fire Wars | 2002-05-07 | 60 min |
| Season 30 | Episode 1 | Killer Disease on Campus | 2002-09-03 | 60 min |
| Season 30 | Episode 2 | Mysterious Life of Caves | 2002-10-01 | 60 min |
| Season 30 | Episode 3 | Lost Roman Treasure | 2002-10-08 | 60 min |
| Season 30 | Episode 4 | Galileo's Battle for the Heavens | 2002-10-29 | 60 min |
| Season 30 | Episode 5 | Volcano's Deadly Warning | 2002-11-12 | 60 min |
| Season 30 | Episode 6 | Sinking City of Venice | 2002-11-19 | 60 min |
| Season 30 | Episode 7 | The Orchid Hunter | 2002-11-26 | 60 min |
| Season 30 | Episode 8 | Spies That Fly | 2003-01-07 | 60 min |
| Season 30 | Episode 9 | Last Flight of Bomber 31 | 2003-01-14 | 60 min |
| Season 30 | Episode 10 | Ancient Creature of the Deep | 2003-01-21 | 60 min |
| Season 30 | Episode 11 | Battle of the X-Planes | 2003-02-04 | 60 min |
| Season 30 | Episode 12 | Mountain of Ice | 2003-02-11 | 60 min |
| Season 30 | Episode 13 | Lost Treasures of Tibet | 2003-02-18 | 60 min |
| Season 30 | Episode 14 | Dirty Bomb | 2003-02-25 | 60 min |
| Season 30 | Episode 15 | Deep Sea Invasion | 2003-04-01 | 60 min |
| Season 30 | Episode 16 | Secret of Photo 51 | 2003-04-15 | 60 min |
| Season 31 | Episode 1 | Infinite Secrets | 2003-09-30 | 60 min |
| Season 31 | Episode 2 | Who Killed the Red Baron? | 2003-10-07 | 60 min |
| Season 31 | Episode 3 | The Elegant Universe: Einstein's Dream (1) | 2003-10-28 | 60 min |
| Season 31 | Episode 4 | The Elegant Universe: String's the Thing (2) | 2003-10-28 | 60 min |
| Season 31 | Episode 5 | The Elegant Universe: Welcome to the 11th Dimension (3) | 2003-11-04 | 60 min |
| Season 31 | Episode 6 | Wright Brothers' Flying Machine | 2003-11-11 | 60 min |
| Season 31 | Episode 7 | Magnetic Storm | 2003-11-18 | 60 min |
| Season 31 | Episode 8 | Volcano Above the Clouds | 2003-11-18 | 60 min |
| Season 31 | Episode 9 | MARS: Dead or Alive | 2004-01-04 | 60 min |
| Season 31 | Episode 10 | Secrets of the Crocodile Caves | 2004-01-20 | 60 min |
| Season 31 | Episode 11 | Dogs and More Dogs | 2004-02-03 | 60 min |
| Season 31 | Episode 12 | Descent Into the Ice | 2004-02-10 | 60 min |
| Season 31 | Episode 13 | Crash of Flight 111 | 2004-02-17 | 60 min |
| Season 31 | Episode 14 | Life and Death in the War Zone | 2004-03-02 | 60 min |
| Season 31 | Episode 15 | Hunt for the Supertwister | 2004-03-30 | 60 min |
| Season 31 | Episode 16 | World in the Balance: The People Paradox (1) | 2004-04-20 | 60 min |
| Season 31 | Episode 17 | World in the Balance: China Revs Up (2) | 2004-04-20 | 60 min |
| Season 31 | Episode 18 | Battle Plan Under Fire | 2004-05-04 | 60 min |
| Season 32 | Episode 1 | Origins (1): Earth is Born | 2004-09-28 | 60 min |
| Season 32 | Episode 2 | Origins (2): How Life Began | 2004-09-28 | 60 min |
| Season 32 | Episode 3 | Origins (3): Where Are the Aliens? | 2004-09-29 | 60 min |
| Season 32 | Episode 4 | Origins (4): Back to the Beginning | 2004-09-29 | 60 min |
| Season 32 | Episode 5 | The Most Dangerous Woman in America | 2004-10-12 | 60 min |
| Season 32 | Episode 6 | America's Stone Age Explorers | 2004-11-09 | 60 min |
| Season 32 | Episode 7 | Great Escape | 2004-11-16 | 60 min |
| Season 32 | Episode 8 | Ancient Refuge in the Holy Land | 2004-11-23 | 60 min |
| Season 32 | Episode 9 | Welcome to Mars | 2005-01-04 | 60 min |
| Season 32 | Episode 10 | The Boldest Hoax | 2005-01-11 | 60 min |
| Season 32 | Episode 11 | Supersonic Dream | 2005-01-18 | 60 min |
| Season 32 | Episode 12 | The Viking Deception | 2005-02-08 | 60 min |
| Season 32 | Episode 13 | Saving the National Treasures | 2005-02-15 | 60 min |
| Season 32 | Episode 14 | A Daring Flight | 2005-02-22 | 60 min |
| Season 32 | Episode 15 | Wave That Shook the World | 2005-03-29 | 60 min |
| Season 33 | Episode 1 | Mystery of the Megaflood | 2005-09-20 | 60 min |
| Season 33 | Episode 2 | Sinking the Supership | 2005-10-04 | 60 min |
| Season 33 | Episode 3 | Einstein's Big Idea | 2005-10-11 | 60 min |
| Season 33 | Episode 4 | Volcano Under the City | 2005-11-01 | 60 min |
| Season 33 | Episode 5 | Hitler's Sunken Secret | 2005-11-08 | 60 min |
| Season 33 | Episode 6 | Newton's Dark Secrets | 2005-11-15 | 60 min |
| Season 33 | Episode 7 | Storm That Drowned a City | 2005-11-22 | 60 min |
| Season 33 | Episode 8 | The Mummy Who Would Be King | 2006-01-03 | 60 min |
| Season 33 | Episode 9 | Deadly Ascent | 2006-01-17 | 60 min |
| Season 33 | Episode 10 | The Perfect Corpse | 2006-02-07 | 60 min |
| Season 33 | Episode 11 | Jewel of the Earth | 2006-02-14 | 60 min |
| Season 33 | Episode 12 | The Ghost Particle | 2006-02-21 | 60 min |
| Season 33 | Episode 13 | Arctic Passage: Prisoners of the Ice | 2006-02-28 | 60 min |
| Season 33 | Episode 14 | The Great Robot Race | 2006-03-28 | 60 min |
| Season 33 | Episode 15 | Voyage to the Mystery Moon | 2006-04-04 | 60 min |
| Season 33 | Episode 16 | Dimming the Sun | 2006-04-18 | 60 min |
| Season 34 | Episode 1 | Building on Ground Zero | 2006-09-05 | 60 min |
| Season 34 | Episode 2 | Mystery of the Megavolcano | 2006-09-26 | 60 min |
| Season 34 | Episode 3 | The Deadliest Plane Crash | 2006-10-17 | 60 min |
| Season 34 | Episode 4 | Monster of the Milky Way | 2006-10-31 | 60 min |
| Season 34 | Episode 5 | Wings of Madness | 2006-11-07 | 60 min |
| Season 34 | Episode 6 | The Family That Walks on All Fours | 2006-11-14 | 60 min |
| Season 34 | Episode 7 | Underwater Dream Machine | 2006-12-26 | 60 min |
| Season 34 | Episode 8 | Percy Julian: Forgotten Genius | 2007-02-06 | 120 min |
| Season 34 | Episode 9 | The Last Great Ape | 2007-02-13 | 60 min |
| Season 34 | Episode 10 | Kings of Camouflage | 2007-04-03 | 60 min |
| Season 34 | Episode 11 | First Flower | 2007-04-17 | 60 min |
| Season 34 | Episode 12 | Saved By the Sun | 2007-04-24 | 60 min |
| Season 34 | Episode 13 | Pocahontas Revealed | 2007-05-08 | 60 min |
| Season 34 | Episode 14 | Bone Diggers | 2007-06-19 | 60 min |
| Season 34 | Episode 15 | The Great Inca Rebellion | 2007-06-26 | 60 min |
| Season 35 | Episode 1 | Secrets of the Samurai Sword | 2007-10-09 | 60 min |
| Season 35 | Episode 2 | Ghost in Your Genes | 2007-10-16 | 60 min |
| Season 35 | Episode 3 | Marathon Challenge | 2007-10-30 | 60 min |
| Season 35 | Episode 4 | Sputnik Declassified | 2007-11-07 | 60 min |
| Season 35 | Episode 5 | Judgment Day: Intelligent Design on Trial | 2007-11-13 | 60 min |
| Season 35 | Episode 6 | Master of the Killer Ants | 2007-11-20 | 60 min |
| Season 35 | Episode 7 | Missing in MiG Alley | 2007-12-18 | 60 min |
| Season 35 | Episode 8 | Absolute Zero: The Conquest of Cold (1) | 2008-01-08 | 60 min |
| Season 35 | Episode 9 | Absolute Zero: The Race for Absolute Zero (2) | 2008-01-15 | 60 min |
| Season 35 | Episode 10 | Secrets of the Parthenon | 2008-01-29 | 60 min |
| Season 35 | Episode 11 | Astrospies | 2008-02-12 | 60 min |
| Season 35 | Episode 12 | Ape Genius | 2008-02-19 | 60 min |
| Season 35 | Episode 13 | The Four-Winged Dinosaur | 2008-02-26 | 60 min |
| Season 35 | Episode 14 | Cracking the Maya Code | 2008-04-08 | 60 min |
| Season 35 | Episode 15 | Car of the Future | 2008-04-22 | 60 min |
| Season 35 | Episode 16 | A Walk to Beautiful | 2008-05-13 | 60 min |
| Season 35 | Episode 17 | Lord of the Ants | 2008-05-20 | 60 min |
| Season 36 | Episode 1 | Arctic Dinosaurs | 2008-10-07 | 60 min |
| Season 36 | Episode 2 | Space Shuttle Disaster | 2008-10-14 | 60 min |
| Season 36 | Episode 3 | Parallel Worlds, Parallel Lives | 2008-10-21 | 60 min |
| Season 36 | Episode 4 | Fractals: Hunting the Hidden Dimension | 2008-10-28 | 60 min |
| Season 36 | Episode 5 | Alien from Earth | 2008-11-11 | 60 min |
| Season 36 | Episode 6 | The Bible's Buried Secrets | 2008-11-18 | 60 min |
| Season 36 | Episode 7 | Ocean Animal Emergency | 2008-11-25 | 60 min |
| Season 36 | Episode 8 | Is There Life on Mars? | 2008-12-30 | 60 min |
| Season 36 | Episode 9 | The Big Energy Gamble | 2009-01-20 | 60 min |
| Season 36 | Episode 10 | The Incredible Journey of the Butterflies | 2009-01-27 | 60 min |
| Season 36 | Episode 11 | The Spy Factory | 2009-02-03 | 60 min |
| Season 36 | Episode 12 | Rat Attack | 2009-02-24 | 60 min |
| Season 36 | Episode 13 | Extreme Ice | 2009-03-24 | 60 min |
| Season 36 | Episode 14 | Last Extinction (Megabeasts' Sudden Death) | 2009-03-31 | 60 min |
| Season 36 | Episode 15 | Doctors' Diaries (1) | 2009-04-07 | 60 min |
| Season 36 | Episode 16 | Doctors' Diaries (2) | 2009-04-14 | 60 min |
| Season 36 | Episode 17 | Musical Minds | 2009-06-30 | 60 min |
| Season 37 | Episode 1 | Darwin's Darkest Hour | 2009-10-06 | 60 min |
| Season 37 | Episode 2 | Hubble's Amazing Rescue | 2009-10-13 | 60 min |
| Season 37 | Episode 3 | Lizard Kings | 2009-10-20 | 60 min |
| Season 37 | Episode 4 | Becoming Human Part 1: First Steps | 2009-11-03 | 60 min |
| Season 37 | Episode 5 | Becoming Human Part 2: Birth of Humanity | 2009-11-10 | 60 min |
| Season 37 | Episode 6 | Becoming Human Part 3: Last Human Standing | 2009-11-17 | 60 min |
| Season 37 | Episode 7 | What Are Dreams? | 2009-11-24 | 60 min |
| Season 37 | Episode 8 | What Darwin Never Knew | 2009-12-29 | 60 min |
| Season 37 | Episode 9 | Killer Subs in Pearl Harbor | 2010-01-05 | 60 min |
| Season 37 | Episode 10 | Building Pharaoh's Ship | 2010-01-12 | 60 min |
| Season 37 | Episode 11 | Riddles of the Sphinx | 2010-01-19 | 60 min |
| Season 37 | Episode 12 | Ghosts of Machu Picchu | 2010-02-02 | 60 min |
| Season 37 | Episode 13 | Extreme Cave Diving | 2010-02-09 | 60 min |
| Season 37 | Episode 14 | The Pluto Files | 2010-03-02 | 60 min |
| Season 37 | Episode 15 | Telescope: Hunting the Edge of Space - The Mystery of the Milky Way | 2010-04-06 | 60 min |
| Season 37 | Episode 16 | Telescope: Hunting the Edge of Space - The Ever Expanding Universe | 2010-04-13 | 60 min |
| Season 37 | Episode 17 | Mind Over Money | 2010-04-27 | 60 min |
| Season 37 | Episode 18 | Mt. St. Helens Back from the Dead | 2010-05-04 | 60 min |
| Season 38 | Episode 1 | Building the Great Cathedrals | 2010-10-19 | 60 min |
| Season 38 | Episode 2 | Emergency Mine Rescue | 2010-10-26 | 60 min |
| Season 38 | Episode 3 | Trapped in an Elevator | 2010-11-02 | 60 min |
| Season 38 | Episode 4 | Dogs Decoded | 2010-11-09 | 60 min |
| Season 38 | Episode 5 | Secrets of Stonehenge | 2010-11-16 | 60 min |
| Season 38 | Episode 6 | Quest for Solomon's Mines | 2010-11-23 | 60 min |
| Season 38 | Episode 7 | Secrets Beneath the Ice | 2010-12-28 | 60 min |
| Season 38 | Episode 8 | Deadliest Earthquakes | 2011-01-11 | 60 min |
| Season 38 | Episode 9 | Making Stuff Stronger (1) | 2011-01-19 | 60 min |
| Season 38 | Episode 10 | Making Stuff Smaller (2) | 2011-01-26 | 60 min |
| Season 38 | Episode 11 | Making Stuff Cleaner (3) | 2011-02-02 | 60 min |
| Season 38 | Episode 12 | Making Stuff Smarter (4) | 2011-02-09 | 60 min |
| Season 38 | Episode 13 | Smartest Machine on Earth | 2011-02-09 | 60 min |
| Season 38 | Episode 14 | Crash of Flight 447 | 2011-02-16 | 60 min |
| Season 38 | Episode 15 | Venom: Nature's Killer | 2011-02-23 | 60 min |
| Season 38 | Episode 16 | Japan's Killer Quake | 2011-03-30 | 60 min |
| Season 38 | Episode 17 | Power Surge | 2011-04-20 | 60 min |
| Season 39 | Episode 1 | Engineering Ground Zero | 2011-09-07 | 60 min |
| Season 39 | Episode 2 | Surviving the Tsunami | 2011-09-28 | 60 min |
| Season 39 | Episode 3 | Finding Life Beyond Earth: Are We Alone? | 2011-10-19 | 60 min |
| Season 39 | Episode 4 | Iceman Murder Mystery | 2011-10-26 | 60 min |
| Season 39 | Episode 5 | The Fabric of the Cosmos - What is Space? | 2011-11-02 | 60 min |
| Season 39 | Episode 6 | The Fabric of the Cosmos - The Illusion of Time | 2011-11-09 | 60 min |
| Season 39 | Episode 7 | The Fabric of the Cosmos - Quantum Leap | 2011-11-16 | 60 min |
| Season 39 | Episode 8 | The Fabric of the Cosmos - Universe or Multiverse? | 2011-11-23 | 60 min |
| Season 39 | Episode 9 | Deadliest Volcanoes | 2012-01-04 | 60 min |
| Season 39 | Episode 10 | Bombing Hitler's Dams | 2012-01-11 | 60 min |
| Season 39 | Episode 11 | 3D Spies of WWII | 2012-01-18 | 60 min |
| Season 39 | Episode 12 | Mystery of a Masterpiece | 2012-01-25 | 60 min |
| Season 39 | Episode 13 | Ice Age Death Trap | 2012-02-01 | 60 min |
| Season 39 | Episode 14 | Separating Twins | 2012-02-08 | 60 min |
| Season 39 | Episode 15 | Cracking Your Genetic Code | 2012-03-28 | 60 min |
| Season 39 | Episode 16 | Hunting the Elements | 2012-04-04 | 60 min |
| Season 39 | Episode 17 | Deadliest Tornadoes | 2012-04-11 | 60 min |
| Season 39 | Episode 18 | Why Ships Sink | 2012-04-18 | 60 min |
| Season 39 | Episode 19 | Secrets of the Sun | 2012-04-25 | 60 min |
| Season 40 | Episode 1 | Secrets of the Viking Sword | 2012-10-10 | 60 min |
| Season 40 | Episode 2 | Forensics on Trial | 2012-10-17 | 60 min |
| Season 40 | Episode 3 | Mystery of Easter Island | 2012-11-07 | 60 min |
| Season 40 | Episode 4 | Ultimate Mars Challenge | 2012-11-14 | 60 min |
| Season 40 | Episode 5 | Inside the Megastorm | 2012-11-18 | 60 min |
| Season 40 | Episode 6 | Doomsday Volcanoes | 2013-01-02 | 60 min |
| Season 40 | Episode 7 | Decoding Neanderthals | 2013-01-09 | 60 min |
| Season 40 | Episode 8 | Rise of the Drones | 2013-01-23 | 60 min |
| Season 40 | Episode 9 | Who Killed Lindbergh's Baby? | 2013-01-30 | 60 min |
| Season 40 | Episode 10 | Building Pharaoh's Chariot | 2013-02-06 | 60 min |
| Season 40 | Episode 11 | Earth from Space | 2013-02-13 | 60 min |
| Season 40 | Episode 12 | Mind of a Rampage Killer | 2013-02-20 | 60 min |
| Season 40 | Episode 13 | Meteor Strike | 2013-03-27 | 60 min |
| Season 40 | Episode 14 | Ancient Computer | 2013-04-03 | 60 min |
| Season 40 | Episode 15 | Australia's First 4 Billion Years - Awakening | 2013-04-10 | 60 min |
| Season 40 | Episode 16 | Australia's First 4 Billion Years - Life Explodes | 2013-04-17 | 60 min |
| Season 40 | Episode 17 | Australia's First 4 Billion Years - Monsters | 2013-04-24 | 60 min |
| Season 40 | Episode 18 | Australia's First 4 Billion Years - Strange Creatures | 2013-05-01 | 60 min |
| Season 40 | Episode 19 | Manhunt - Boston Bombers | 2013-05-29 | 60 min |
| Season 40 | Episode 20 | Oklahoma's Deadliest Tornadoes | 2013-05-29 | 60 min |
| Season 41 | Episode 1 | Ground Zero Supertower | 2013-09-11 | 60 min |
| Season 41 | Episode 2 | Megastorm Aftermath | 2013-10-09 | 60 min |
| Season 41 | Episode 3 | Making Stuff Faster | 2013-10-16 | 60 min |
| Season 41 | Episode 4 | Making Stuff Wilder | 2013-10-23 | 60 min |
| Season 41 | Episode 5 | Making Stuff Colder | 2013-10-30 | 60 min |
| Season 41 | Episode 6 | Making Stuff Safer | 2013-11-06 | 60 min |
| Season 41 | Episode 7 | Cold Case JFK | 2013-11-13 | 60 min |
| Season 41 | Episode 8 | At the Edge of Space | 2013-11-20 | 60 min |
| Season 41 | Episode 9 | Asteroid: Doomsday or Payday? | 2013-11-20 | 60 min |
| Season 41 | Episode 10 | Alien Planets Revealed | 2014-01-08 | 60 min |
| Season 41 | Episode 11 | Zeppelin Terror Attack | 2014-01-15 | 60 min |
| Season 41 | Episode 12 | Killer Typhoon | 2014-01-22 | 60 min |
| Season 41 | Episode 13 | Ghosts of Murdered Kings | 2014-01-29 | 60 min |
| Season 41 | Episode 14 | Roman Catacomb Mystery | 2014-02-05 | 60 min |
| Season 41 | Episode 15 | Great Cathedral Mystery | 2014-02-12 | 60 min |
| Season 41 | Episode 16 | Wild Predator Invasion | 2014-04-02 | 60 min |
| Season 41 | Episode 17 | Inside Animal Minds: Bird Genius | 2014-04-09 | 60 min |
| Season 41 | Episode 18 | Inside Animal Minds: Dogs & Super Senses | 2014-04-16 | 60 min |
| Season 41 | Episode 19 | Inside Animal Minds: Who's the Smartest? | 2014-04-23 | 60 min |
| Season 41 | Episode 20 | Why Sharks Attack | 2014-05-07 | 60 min |
| Season 41 | Episode 21 | Escape from Nazi Alcatraz | 2014-05-14 | 60 min |
| Season 41 | Episode 22 | D-Day's Sunken Secrets | 2014-05-28 | 60 min |
| Season 42 | Episode 1 | Vaccines—Calling the Shots | 2014-09-10 | 60 min |
| Season 42 | Episode 2 | Rise of the Hackers | 2014-09-24 | 60 min |
| Season 42 | Episode 3 | Why Planes Vanish | 2014-10-08 | 60 min |
| Season 42 | Episode 4 | Surviving Ebola | 2014-10-08 | 60 min |
| Season 42 | Episode 5 | Ben Franklin's Balloons | 2014-10-22 | 60 min |
| Season 42 | Episode 6 | First Air War | 2014-10-29 | 60 min |
| Season 42 | Episode 7 | Bigger Than T. Rex | 2014-11-05 | 60 min |
| Season 42 | Episode 8 | Emperor's Ghost Army | 2014-11-12 | 60 min |
| Season 42 | Episode 9 | Killer Landslides | 2014-11-19 | 60 min |
| Season 42 | Episode 10 | First Man on the Moon | 2014-12-03 | 60 min |
| Season 42 | Episode 11 | Big Bang Machine | 2015-01-14 | 60 min |
| Season 42 | Episode 12 | Sunken Ship Rescue | 2015-01-21 | 60 min |
| Season 42 | Episode 13 | Sinkholes—Buried Alive | 2015-01-28 | 60 min |
| Season 42 | Episode 14 | Colosseum: Roman Death Trap | 2015-02-11 | 60 min |
| Season 42 | Episode 15 | Petra: Lost City of Stone | 2015-02-18 | 60 min |
| Season 42 | Episode 16 | Hagia Sophia: Istanbul's Ancient Mystery | 2015-02-25 | 60 min |
| Season 42 | Episode 17 | The Great Math Mystery | 2015-04-15 | 60 min |
| Season 42 | Episode 18 | Invisible Universe Revealed | 2015-04-22 | 60 min |
| Season 42 | Episode 19 | Nazi Attack on America | 2015-05-06 | 60 min |
| Season 42 | Episode 20 | Lethal Seas | 2015-05-13 | 60 min |
| Season 42 | Episode 21 | Chasing Pluto | 2015-07-15 | 60 min |
| Season 42 | Episode 22 | Nuclear Meltdown Disaster | 2015-07-29 | 60 min |
| Season 43 | Episode 1 | Dawn of Humanity | 2015-09-16 | 120 min |
| Season 43 | Episode 2 | Arctic Ghost Ship | 2015-09-23 | 60 min |
| Season 43 | Episode 3 | Secrets of Noah's Ark | 2015-10-07 | 60 min |
| Season 43 | Episode 4 | Cyberwar Threat | 2015-10-14 | 60 min |
| Season 43 | Episode 5 | Animal Mummies | 2015-10-28 | 60 min |
| Season 43 | Episode 6 | Making North America: Origins | 2015-11-04 | 60 min |
| Season 43 | Episode 7 | Making North America: Life | 2015-11-11 | 60 min |
| Season 43 | Episode 8 | Making North America: Human | 2015-11-18 | 60 min |
| Season 43 | Episode 9 | Inside Einstein's Mind | 2015-11-25 | 60 min |
| Season 43 | Episode 10 | Secret Tunnel Warfare | 2016-01-06 | 60 min |
| Season 43 | Episode 11 | Life's Rocky Start | 2016-01-13 | 60 min |
| Season 43 | Episode 12 | Mystery Beneath the Ice | 2016-01-20 | 60 min |
| Season 43 | Episode 13 | Himalayan Megaquake | 2016-01-27 | 60 min |
| Season 43 | Episode 14 | Creatures of Light | 2016-02-03 | 60 min |
| Season 43 | Episode 15 | Memory Hackers | 2016-02-10 | 60 min |
| Season 43 | Episode 16 | Iceman Reborn | 2016-02-17 | 60 min |
| Season 43 | Episode 17 | Rise of the Robots | 2016-02-24 | 60 min |
| Season 43 | Episode 18 | Vikings Unearthed | 2016-04-06 | 120 min |
| Season 43 | Episode 19 | Can Alzheimer's Be Stopped? | 2016-04-13 | 60 min |
| Season 43 | Episode 20 | Wild Ways | 2016-04-20 | 60 min |
| Season 43 | Episode 21 | Operation Lighthouse Rescue | 2016-05-04 | 60 min |
| Season 43 | Episode 22 | Bombing Hitler's Supergun | 2016-05-11 | 60 min |
| Season 44 | Episode 1 | 15 Years of Terror | 2016-09-07 | 60 min |
| Season 44 | Episode 2 | School of the Future | 2016-09-14 | 120 min |
| Season 44 | Episode 3 | Great Human Odyssey | 2016-10-05 | 120 min |
| Season 44 | Episode 4 | Super Tunnel | 2016-10-12 | 60 min |
| Season 44 | Episode 5 | Treasures of the Earth: Gems | 2016-11-02 | 60 min |
| Season 44 | Episode 6 | Treasures of the Earth: Metals | 2016-11-09 | 60 min |
| Season 44 | Episode 7 | Treasures of the Earth: Power | 2016-11-16 | 60 min |
| Season 44 | Episode 8 | Secrets of the Sky Tombs | 2017-01-04 | 60 min |
| Season 44 | Episode 9 | The Nuclear Option | 2017-01-11 | 60 min |
| Season 44 | Episode 10 | Search for the Super Battery | 2017-02-01 | 60 min |
| Season 44 | Episode 11 | Ultimate Cruise Ship | 2017-02-08 | 60 min |
| Season 44 | Episode 12 | The Origami Revolution | 2017-02-15 | 60 min |
| Season 44 | Episode 13 | Why Trains Crash | 2017-02-22 | 60 min |
| Season 44 | Episode 14 | Holocaust Escape Tunnel | 2017-04-19 | 60 min |
| Season 44 | Episode 15 | Building Chernobyl's MegaTomb | 2017-04-26 | 60 min |
| Season 44 | Episode 16 | Chinese Chariot Revealed | 2017-05-17 | 60 min |
| Season 44 | Episode 17 | Poisoned Water | 2017-05-31 | 60 min |
| Season 44 | Episode 18 | Eclipse Over America | 2017-08-21 | 60 min |
| Season 44 | Episode 19 | Death Dive to Saturn | 2017-09-13 | 60 min |
| Season 44 | Episode 20 | Secrets of the Shining Knight | 2017-10-04 | 60 min |
| Season 44 | Episode 21 | Ghosts of Stonehenge | 2017-10-11 | 60 min |
| Season 44 | Episode 22 | Secrets of the Forbidden City | 2017-10-18 | 60 min |
| Season 44 | Episode 23 | Killer Volcanoes | 2017-10-25 | 60 min |
| Season 44 | Episode 24 | Killer Hurricanes | 2017-11-01 | 60 min |
| Season 44 | Episode 25 | Killer Floods | 2017-11-08 | 60 min |
| Season 44 | Episode 26 | Extreme Animal Weapons | 2017-11-22 | 60 min |
| Season 44 | Episode 27 | Bird Brain | 2017-12-20 | 60 min |
| Season 44 | Episode 28 | Day the Dinosaurs Died | 2017-12-27 | 60 min |
| Season 45 | Episode 1 | Black Hole Apocalypse | 2018-01-10 | 120 min |
| Season 45 | Episode 2 | The Impossible Flight | 2018-01-31 | 120 min |
| Season 45 | Episode 3 | First Face of America | 2018-02-07 | 60 min |
| Season 45 | Episode 4 | Great Escape at Dunkirk | 2018-02-14 | 60 min |
| Season 45 | Episode 5 | Prediction by the Numbers | 2018-02-28 | 60 min |
| Season 45 | Episode 6 | Decoding the Weather Machine | 2018-04-18 | 120 min |
| Season 45 | Episode 7 | Rise of the Superstorms | 2018-06-27 | 60 min |
| Season 45 | Episode 8 | Transplanting Hope | 2018-09-26 | 60 min |
| Season 45 | Episode 9 | Operation Bridge Rescue | 2018-10-03 | 60 min |
| Season 45 | Episode 10 | Volatile Earth: Volcano on Fire | 2018-10-10 | 60 min |
| Season 45 | Episode 11 | Volatile Earth: Volcano on the Brink | 2018-10-10 | 60 min |
| Season 45 | Episode 12 | Addiction | 2018-10-17 | 60 min |
| Season 45 | Episode 13 | Flying Supersonic | 2018-10-24 | 60 min |
| Season 45 | Episode 14 | Last B-24 | 2018-11-07 | 60 min |
| Season 45 | Episode 15 | Thai Cave Rescue | 2018-11-14 | 60 min |
| Season 45 | Episode 16 | World's Fastest Animal | 2018-11-21 | 60 min |
| Season 45 | Episode 17 | Apollo's Daring Mission | 2018-12-26 | 60 min |
| Season 46 | Episode 1 | Pluto and Beyond | 2019-01-02 | 60 min |
| Season 46 | Episode 2 | Einstein's Quantum Riddle | 2019-01-09 | 60 min |
| Season 46 | Episode 3 | Kīlauea: Hawaiʻi on Fire | 2019-01-23 | 60 min |
| Season 46 | Episode 4 | Decoding the Great Pyramid | 2019-02-06 | 60 min |
| Season 46 | Episode 5 | Rise of the Rockets | 2019-02-13 | 60 min |
| Season 46 | Episode 6 | The Next Pompeii | 2019-02-20 | 60 min |
| Season 46 | Episode 7 | Saving the Dead Sea | 2019-04-24 | 60 min |
| Season 46 | Episode 8 | Inside the Megafire | 2019-05-08 | 60 min |
| Season 46 | Episode 9 | First Horse Warriors | 2019-05-15 | 60 min |
| Season 46 | Episode 10 | Lost Viking Army | 2019-05-22 | 60 min |
| Season 46 | Episode 11 | Back to the Moon | 2019-07-10 | 60 min |
| Season 46 | Episode 12 | The Planets: Inner Worlds | 2019-07-24 | 60 min |
| Season 46 | Episode 13 | The Planets: Mars | 2019-07-24 | 60 min |
| Season 46 | Episode 14 | The Planets: Jupiter | 2019-07-31 | 60 min |
| Season 46 | Episode 15 | The Planets: Saturn | 2019-08-07 | 60 min |
| Season 46 | Episode 16 | The Planets: Ice Worlds | 2019-08-14 | 60 min |
| Season 46 | Episode 17 | Why Bridges Collapse | 2019-10-16 | 60 min |
| Season 46 | Episode 18 | Look Who's Driving | 2019-10-23 | 60 min |
| Season 46 | Episode 19 | Rise of the Mammals | 2019-10-30 | 60 min |
| Season 46 | Episode 20 | Dead Sea Scroll Detectives | 2019-11-06 | 60 min |
| Season 46 | Episode 21 | Decoding da Vinci | 2019-11-13 | 60 min |
| Season 46 | Episode 22 | The Violence Paradox | 2019-11-20 | 120 min |
| Season 46 | Episode 23 | Animal Espionage | 2019-11-27 | 60 min |
| Season 47 | Episode 1 | Polar Extremes | 2020-02-05 | 120 min |
| Season 47 | Episode 2 | Dog Tales | 2020-02-12 | 60 min |
| Season 47 | Episode 3 | Cat Tales | 2020-02-19 | 60 min |
| Season 47 | Episode 4 | Mysteries of Sleep | 2020-02-26 | 60 min |
| Season 47 | Episode 5 | Cuba's Cancer Hope | 2020-04-01 | 60 min |
| Season 47 | Episode 6 | The Truth About Fat | 2020-04-08 | 60 min |
| Season 47 | Episode 7 | Decoding COVID-19 | 2020-05-13 | 60 min |
| Season 47 | Episode 9 | Eagle Power | 2020-05-20 | 60 min |
| Season 47 | Episode 11 | Human Nature / CRISPR Gene-Editing Reality Check | 2020-09-09 | 120 min |
| Season 47 | Episode 12 | Secret Mind of Slime | 2020-09-16 | 60 min |
| Season 47 | Episode 13 | A to Z: The First Alphabet | 2020-09-23 | 60 min |
| Season 47 | Episode 14 | A to Z: How Writing Changed the World | 2020-09-30 | 60 min |
| Season 47 | Episode 15 | Nature's Fear Factor | 2020-10-14 | 60 min |
| Season 47 | Episode 16 | Touching the Asteroid | 2020-10-21 | 60 min |
| Season 47 | Episode 17 | Can We Cool the Planet? | 2020-10-28 | 60 min |
| Season 47 | Episode 18 | Saving Notre Dame | 2020-11-25 | 60 min |
| Season 48 | Episode 1 | Secrets In Our DNA | 2021-01-13 | 60 min |
| Season 48 | Episode 2 | Beyond the Elements: Reactions | 2021-02-03 | 60 min |
| Season 48 | Episode 3 | Beyond the Elements: Indestructible | 2021-02-10 | 60 min |
| Season 48 | Episode 4 | Beyond the Elements: Life | 2021-02-17 | 60 min |
| Season 48 | Episode 5 | Looking for Life on Mars | 2021-02-24 | 60 min |
| Season 48 | Episode 6 | Picture a Scientist / Search Engine Breakdown | 2021-04-14 | 120 min |
| Season 48 | Episode 7 | Reef Rescue | 2021-04-21 | 60 min |
| Season 48 | Episode 8 | Fighting for Fertility | 2021-05-12 | 60 min |
| Season 48 | Episode 9 | Hindenburg: The New Evidence | 2021-05-19 | 60 min |
| Season 48 | Episode 10 | Great Electric Airplane Race | 2021-05-26 | 60 min |
| Season 48 | Episode 11 | Ship That Changed the World | 2021-06-02 | 60 min |
| Season 48 | Episode 12 | Bat Superpowers | 2021-09-15 | 60 min |
| Season 48 | Episode 13 | The Cannabis Question | 2021-09-29 | 60 min |
| Season 48 | Episode 14 | Particles Unknown | 2021-10-06 | 60 min |
| Season 48 | Episode 15 | Arctic Drift | 2021-10-13 | 60 min |
| Season 48 | Episode 16 | Edible Insects | 2021-10-20 | 60 min |
| Season 48 | Episode 17 | NOVA Universe Revealed: Age of Stars | 2021-10-27 | 60 min |
| Season 48 | Episode 18 | NOVA Universe Revealed: Milky Way | 2021-11-03 | 60 min |
| Season 48 | Episode 19 | NOVA Universe Revealed: Alien Worlds | 2021-11-10 | 60 min |
| Season 48 | Episode 20 | NOVA Universe Revealed: Black Holes | 2021-11-17 | 60 min |
| Season 48 | Episode 21 | NOVA Universe Revealed: Big Bang | 2021-11-24 | 60 min |
| Season 49 | Episode 1 | High-Risk High-Rise | 2022-01-05 | 60 min |
| Season 49 | Episode 2 | Butterfly Blueprints | 2022-01-12 | 60 min |
| Season 49 | Episode 3 | Alaskan Dinosaurs | 2022-01-19 | 60 min |
| Season 49 | Episode 4 | Ancient Maya Metropolis | 2022-01-26 | 60 min |
| Season 49 | Episode 5 | Arctic Sinkholes | 2022-02-02 | 60 min |
| Season 49 | Episode 6 | Secrets in the Scat | 2022-02-09 | 60 min |
| Season 49 | Episode 7 | Great Mammoth Mystery | 2022-02-16 | 60 min |
| Season 49 | Episode 8 | Augmented | 2022-02-23 | 85 min |
| Season 49 | Episode 9 | Predicting My MS | 2022-02-23 | 30 min |
| Season 49 | Episode 10 | Determined: Fighting Alzheimer's | 2022-04-06 | 60 min |
| Season 49 | Episode 11 | Dinosaur Apocalypse: The New Evidence | 2022-05-11 | 60 min |
| Season 49 | Episode 12 | Dinosaur Apocalypse: The Last Day | 2022-05-11 | 60 min |
| Season 49 | Episode 13 | Why Ships Crash | 2022-05-18 | 60 min |
| Season 49 | Episode 14 | Ice Age Footprints | 2022-05-25 | 60 min |
| Season 49 | Episode 15 | Ultimate Space Telescope | 2022-07-13 | 60 min |
| Season 49 | Episode 16 | Saving Venice | 2022-09-28 | 60 min |
| Season 49 | Episode 17 | Ending HIV in America | 2022-10-05 | 60 min |
| Season 49 | Episode 18 | Computer v. Crime | 2022-10-12 | 60 min |
| Season 49 | Episode 19 | Can Psychedelics Cure? | 2022-10-19 | 60 min |
| Season 49 | Episode 20 | Ocean Invaders | 2022-10-26 | 60 min |
| Season 49 | Episode 21 | Nazca Desert Mystery | 2022-11-02 | 60 min |
| Season 49 | Episode 22 | Crypto Decoded | 2022-11-09 | 60 min |
| Season 49 | Episode 23 | Zero to Infinity | 2022-11-16 | 60 min |
| Season 49 | Episode 24 | Rebuilding Notre Dame | 2022-12-14 | 60 min |
| Season 50 | Episode 1 | London Super Tunnel | 2023-02-01 | 60 min |
| Season 50 | Episode 2 | Star Chasers of Senegal | 2023-02-08 | 60 min |
| Season 50 | Episode 3 | Ancient Builders of the Amazon | 2023-02-15 | 60 min |
| Season 50 | Episode 4 | New Eye on the Universe | 2023-02-22 | 60 min |
| Season 50 | Episode 5 | Weathering the Future | 2023-04-12 | 60 min |
| Season 50 | Episode 6 | Chasing Carbon Zero | 2023-04-26 | 60 min |
| Season 50 | Episode 7 | Saving the Right Whale | 2023-05-03 | 60 min |
| Season 50 | Episode 8 | Hidden Volcano Abyss | 2023-05-10 | 60 min |
| Season 50 | Episode 9 | Your Brain: Perception Deception | 2023-05-17 | 60 min |
| Season 50 | Episode 10 | Your Brain: Who's in Control? | 2023-05-24 | 60 min |
| Season 50 | Episode 11 | Ancient Earth: Birth of the Sky | 2023-10-04 | 60 min |
| Season 50 | Episode 12 | Ancient Earth: Frozen | 2023-10-11 | 60 min |
| Season 50 | Episode 13 | Ancient Earth: Life Rising | 2023-10-18 | 60 min |
| Season 50 | Episode 14 | Ancient Earth: Inferno | 2023-10-25 | 60 min |
| Season 50 | Episode 15 | Ancient Earth: Humans | 2023-11-01 | 60 min |
| Season 50 | Episode 16 | Inside China's Tech Boom | 2023-11-08 | 60 min |
| Season 50 | Episode 17 | The Battle to Beat Malaria | 2023-11-15 | 60 min |
| Season 50 | Episode 18 | Lee and Liza's Family Tree | 2023-11-22 | 60 min |
| Season 51 | Episode 1 | When Whales Could Walk | 2024-01-31 | 60 min |
| Season 51 | Episode 2 | Easter Islands Origins | 2024-02-07 | 60 min |
| Season 51 | Episode 3 | Building the Eiffel Tower | 2024-02-14 | 60 min |
| Season 51 | Episode 4 | Hunt for the Oldest DNA | 2024-02-21 | 60 min |
| Season 51 | Episode 5 | A.I. Revolution | 2024-03-27 | 60 min |
| Season 51 | Episode 6 | Great American Eclipse | 2024-04-03 | 60 min |
| Season 51 | Episode 7 | Secrets in Your Data | 2024-05-15 | 60 min |
| Season 51 | Episode 8 | Decoding the Universe: Cosmos | 2024-05-22 | 60 min |
| Season 51 | Episode 9 | Solar System: Storm Worlds | 2024-10-02 | 60 min |
| Season 51 | Episode 10 | Solar System: Strange Worlds | 2024-10-09 | 60 min |
| Season 51 | Episode 11 | Solar System: Volcano Worlds | 2024-10-16 | 60 min |
| Season 51 | Episode 12 | Solar System: Icy Worlds | 2024-10-23 | 60 min |
| Season 51 | Episode 13 | Solar System: Wandering Worlds | 2024-10-30 | 60 min |
| Season 51 | Episode 14 | Decoding the Universe: Quantum | 2024-11-06 | 60 min |
| Season 51 | Episode 15 | Building Stuff: Boost It! | 2024-11-13 | 60 min |
| Season 51 | Episode 16 | Building Stuff: Reach It! | 2024-11-20 | 60 min |
| Season 51 | Episode 17 | Building Stuff: Change It! | 2024-11-27 | 60 min |
| Season 51 | Episode 18 | Lost Tombs of Notre Dame | 2024-12-18 | 60 min |
