Giant coasters; nicotine.
Lightning; proteins; geese; home videos.
Robots; rovers; virtual reality; Mars.
Zoo veterinarian; car engines; can openers; walking sticks.
Mars; blowing wind; Badlands.
Mammoths; greenhouse effect; meteorologist; chocolate.
Glass blowing; smiles; Richard Dean Anderson; hockey; archaeology.
Wilderness training; kayaking; climbing glaciers; mountain.
Gliders; suction cups; dental anesthetics; leeches.
Raging river; mustangs; meteorology.
Pet foods; dogs; wolves; alligators; exotic pets.
Craig T. Nelson; racetrack; gold; moon; baby tiger.
Wrecked ship; scuba diving; London fog; inventors.
Ride; Kirby Puckett; glaucoma; pet food; enzymes.
Wetlands; pond; drinking water; water towers.
Ethanol; bones; coyotes.
Post offices; gems; science home videos.
Malaria tracking; clocks; inventors' fair; deformed frogs.
Olympic solar energy; soccer; trumpets; earthquake scientists.
Rain-forest researchers; snakes; frogs; leaf-cutter ants.
Bee stings; ski jumping; fear; ruminants.
Inca engineering; quipu; potatoes; alpacas.
Avalanche rescue; prosthetic limbs; football scientists; popcorn.
Hypercoaster; nicotine; erasers; dance scientists.
Riverboats; body fat; motorcycle scientists; parrots.
Tahiti; sharks; tattoos; black pearls; coconuts.
Spelunking; the human eye; Betty White; elk.
Jungle survival; liver; emus.
Songbirds; ergonomics; inventors fair; scorpions.
The equator; Masai village; coffee; baby elephants.
Wild-lion veterinarians; bicycles; fish; insect warfare.
Human-slingshot ride; bone marrow; King's Singers; rotting foods.
Hazardous materials; in-line skating; why skin wrinkles; composting.
Walt Disney World; simulator rides; dolphin communication; parade technology; laser shows.
Aircraft fire rescue; balloons; knives; home videos.
Ice surfing; DNA fingerprinting; food decay; steamboat.
Balloon safari; Kenya's grasslands; African wildlife.
Jungle survival; the ear; parachutes; owls.
Ice-surfing; mummy; home-video contest; vocal cords.
Acrobatics; reflexes; fat-free foods; fish.
Pasta bridge; earthquake; special effects; raising a grizzly cub.
Paper money trail; weightlessness; outdoor science labs.
California redwoods; electrical circuit; red fox.
Raptor hospital; photography; rock skipping; snakes.
Corn cuisine; space view; young inventors; Komodo dragon.
The Internet; bacteria; panning for gold; taxidermy.
Dinosaurs; flood waters; the Caribbean; a tiger.
Dog-sledding; camp life; insulation.
Hang gliding; karate; jet lag.
Sound effects; the sun; Globetrotters; hedgehog.
Digital dinosaurs; bread chemistry; angular momentum; wallaby.
Mind reading; garlic; sunscreens; Tasmanian devil.
Plane stamp; the brain; floating city.
Sealing Mount Rushmore's cracks; virtual reality; dripless candles; chimpanzee.
Garbage project; infrared radiation; Shelley Duvall; polar bears.
Diving ailments; LPs vs. CDs; Michael York; Arctic wolf.
Rounding-up buffalo; heart transplants; fingernail myth; chile peppers.
Fire facts; milk processing; young inventors; otters.
Ancient culture reconstruction; mazes; dolphins.
Forest management; carpal tunnel syndrome; condensation; lizards.
Windsurfing; permafrost; tumbleweed; Grevy's zebra.
Jumbo jets; meteors; knuckle-cracking; paper-recycling.
Newspapers; bomb squads; echoes; mosquitoes.
Memory; in-vitro fertilization; goose bumps; hummingbirds.
Emergency rescues; black hole; pizza; reindeer.
Rock climbing; taste tests; bobcat cubs; Monty Hall.
Diabetes; galaxy map; electrodynamics of music; huge bird.
Locks and dams; blood donation; facial moles; black-footed penguins.
Traffic jams; cryogenics; static cling; Russian students in space.
Aurora borealis; atmospheric pressure; trees; piranhas.
Omnimax films; archery; light bulbs; California condor.
Cockroaches; broken bones; tooth health; rhinos.
AIDS; classic root-beer bottle; cement overshoes; wolverines.
Antarctica outpost; krill; measuring penguins and skuas.
Oil spills; body types; hair advice from Crystal Gayle; caribou.
Monster makeup; ozone destruction; mirrors; sweets.
Gauging public opinion; electric cars; ceramics; cougars.
Stunt falls and fires; keeping coffee hot; musk oxen.
A 10th-anniversary show examines how television works.
Hip replacement; air bags; paper cuts; potbellied pigs.
AT&T labs; eclipse; blimps; sociable bear cub.
Quackery; microwaves; change machines; golden eagle.
Acid rain; high jumps; potholes; goats.
Soviet space center; blue skies; inventors fair; llamas.
Eyes; Slinky; bar codes; pain relievers; camels.
Domes; plants and sun; polarized sunglasses; amusement parks.
Dinosaur digs: determining age, assembling bones.
Draining water; cancer cures; laughter; porcupines.
Cancer causes; computer viruses; Frisbees; potato chips.
A murder mystery; Ted Nugent; bats.
Solar cars; a miniature horse; why feet "fall asleep."
Swimming; weightlifting; runner's lungs; the luge.
Glaciers; termites; alligators and crocodiles.
Violins; Voyager spacecraft; the omnivorous kinkajou.
Animal census; eggs; stone crabs.
Hydroelectric power; white-water rafting; weather proverbs.
Sonoran Desert; judo; fact and fiction about pigs.
Indigo; science of billiards; cheetahs.
Helicopters; force, mass and acceleration; koalas.
Blood; "physics circus"; tracking animals.
Kidney function and transplants; trumpeter swans.
Demolition derbies; measuring stress; bald eagle.
Everglades drought; "Tomorrow's World" science series.
Juggling; "where time starts"; how flies sense motion.
Animation; flying machines; skateboarders; turtles/tortoises.
Supercomputers; greenhouse effect; why owls hunt at night.
Blue cheese; reversing the aging process; wolves.
Spinal-cord injuries; how glue works; canine senses.
Training for a marathon; celestial navigation; echidnas.
DNA; annual Rube Goldberg Competition; seahorses.
Milky Way; causes of epilepsy; cuttlefish.
Tracking migrating whales; sunspots; skunks.
Surfing; lava temperature; moray eels.
Migration of monarch butterflies; caffeine; sloths.
Hawaiian rain forest; buoyancy; cold remedies.
Race cars; spiderwebs; tropical fish of a coral reef.
Why bees sting; bowling strikes; boa constrictors.
Roller coasters; quicksand; a white Bengal tiger.
Biomechanics of horse jumping; toys in space; toucans.
Magnets; forest-fire behavior; Siberian lynxes.
Music synthesizers; making maple syrup; servals.
Liquid nitrogen; Commerson's dolphins; insects.
Sleep and insomnia; electron microscopes; giraffes.
Why fireworks explode; making paper; the slow loris.
Rockets; an inventor fair; how a cow makes milk.
Research on marine creatures like squid benefits man.
Clouds; a Rube Goldberg competition; cold viruses.
Air-traffic control; bear behavior; feet and pain.
Reattaching amputated limbs; strobe lights; aardvarks.
Movie creatures; good and bad cholesterol; vultures.
Parachute jumping; re-creating faces from memory; orangutans.
Physics of gymnastics; computer vision; golden monkeys.
Bureau of Standards; nausea; a kelp forest community.
Physics of sailing; skin lotions; how a jellyfish moves.
Child development; bridge engineering; octopuses.
Cocaine; detergents; fabric shrinkage; sled dogs.
Cavities; snowflakes; reflexes; the arctic fox.
Magnetic Resonance Imaging; why stars twinkle; boiling water.
Neon lights; Rube Goldberg machines; puffins; aspirin.
Tornadoes; optical illusions; laryngitis; seashells.
Submarine living; a bird's weight in flight; uvulas.
Overland to the North Pole; endangered sea otters.
Underwater exploration; how mothballs work.
Plastic surgery; bicycle design; saving beluga whales.
Baseball bats; polarized sunglasses; peregrine falcons.
Pterodactyls; Rube Goldberg inventions; black boxes.
The immune system; skis; inside a blimp; beavers.
Diabetes and insulin; frozen foods; flat feet; batteries.
Alcohol; helium balloons; backaches; roller coasters.
Weather patterns; hair loss; carbonation; cranes.
Fossils; mirrors; frostbite; African elephants.
Telescopes; food myths vs. food facts; manatees.
Bee society; high blood pressure; bruises; hiccups.
Sponges; inertia; probability and gambling; pelicans.
Hypothermia; phases of the moon; why a boy's voice changes.
Life in caves; lasers in medicine; baby killer whales.
Training airplane pilots; poisonous snakes; hedgehogs.
Singing in the shower; health diets; tanning; a Patagonian cavy.
Headaches; balancing eggs; peppers; the 1985 Inventors' Fair; a young lion.
California fault lines are traced by earthquake geologists; lungs; bats.
Mechanics of muscles; why stars fall; injured birds of prey.
Punting a football; the science of color; jet lag; a sea lion.
Tennis rackets; sneezing; badgers; fighting cancer.
Solving crimes at the FBI; inside a stomach; llamas.
Comets; the hoax of perpetual motion; sharks.
Boomerangs; Italian cooking; hibernating black bears.
Talking chimpanzees; why people sweat; cold remedies.
Astronaut Jeff Hoffman; modern inventions.
Dinosaurs; bulletproof vests; heartburn; killer whales.
Rainbows; facial reconstruction; popcorn; bathing a hippo.
Dizziness; the chemistry of cooking; the fizz in soda; the bald eagle.
Astronaut Jeff Hoffman tours NASA stations in Houston and Cape Canaveral.
Motion studies; radioactivity; acne; baby Siberian tigers.
The physics of a car crash; allergies; blushing; reindeer.
Thermography; yawns; voices; the North American pronghorn.
How electricity is made; tennis elbow; bubbles; how lenses help eyes see better.
Controlling pain; optical illusions; why crystal sings; the iguana.
Computer graphics; the sense of smell; visits with a tarantula; an inventors' fair.
The science of imploding buildings; why people snore; growling stomachs.
Polygraphs; golf balls; hiccups; unusual cold remedies.
Fire; artificial hearts; a visit to Sea World in San Diego.
Hot-air ballooning; hearing aids; Beluga whales.
Egyptian mummies; balancing a bicycle; helium; owls.
The physics of karate; lightning; whether opossums really play possum.
How radar works.
Motion in movies; blood types; the armadillo.
Space suit; robotics; why knuckles crackle and pop; porcupines.
Ultrasound; extraterrestrial communication; parrots; sensitivity to temperature.
Digital sound; chattering teeth; cooking eggs; camels.
Color blindness; how taste buds work; mysterious black holes.
Video game programmer; heart stress test; mysteries of the wolf; why ears pop.
Fear of falling; holograms; funny bone; why onions make you cry.
Blue skies and red sunsets.
Training for the space shuttle; the endangered clouded leopard.
Ron Guidry discloses the secret of a curve ball; voiceprinting; red-tailed hawk.
Weight in a hot tub; swimming with dolphins; medical use of fiber optics.