All Available Episode
All Season 4 Episode
1. Flight Trainers; Snake Bite; Hedgehoh Chat; Cold Remedies
2. Caves; Lasers; Skin Wrinkle Chat; Whale Birth
3. Hypothermia; Moon; Voice Change Chat; Yak
4. Sponges; Bed of Nails; Probability; Pelicans
5. Bees; Blood Pressure; Bruises Chat; Hiccups
6. Telescopes; Food Myths; Manatee
7. Fossil Dig; Mirrors; Frostbite Chat; Elephants
8. Wind Blow; Baldness; Soda Pop Fizz Chat; Cranes
9. Alcohol; Helium Balloons; Backache Chat; Roller Coaster; Snow Monkeys
10. Diabetes; Frozen Food; Flat Feet Chat; Battery Inventions; Alligators
11. Immune System; Skiing; Blimp; Beaver
12. Pterodactyl; Rube Goldberg; Black Box Chat; Quickies