Season 4

episodes

1.Flight Trainers; Snake Bite; Hedgehoh Chat; Cold Remedies

Oct 11, 198630m

2.Caves; Lasers; Skin Wrinkle Chat; Whale Birth

Oct 18, 198630m

3.Hypothermia; Moon; Voice Change Chat; Yak

Oct 25, 198630m

4.Sponges; Bed of Nails; Probability; Pelicans

5.Bees; Blood Pressure; Bruises Chat; Hiccups

6.Telescopes; Food Myths; Manatee

Nov 15, 198630m

7.Fossil Dig; Mirrors; Frostbite Chat; Elephants

Nov 22, 198630m

8.Wind Blow; Baldness; Soda Pop Fizz Chat; Cranes

Nov 29, 198630m

9.Alcohol; Helium Balloons; Backache Chat; Roller Coaster; Snow Monkeys

10.Diabetes; Frozen Food; Flat Feet Chat; Battery Inventions; Alligators

Dec 13, 198630m

11.Immune System; Skiing; Blimp; Beaver

Dec 20, 198630m

12.Pterodactyl; Rube Goldberg; Black Box Chat; Quickies

Dec 27, 198630m

13.Baseball Bats; Polarized Light; Dreams Chat; Inventors Fair; Falcon