Season 4

E1 · Flight Trainers; Snake Bite; Hedgehoh Chat; Cold Remedies

1986 · 30m

E2 · Caves; Lasers; Skin Wrinkle Chat; Whale Birth

1986 · 30m

E3 · Hypothermia; Moon; Voice Change Chat; Yak

1986 · 30m

E4 · Sponges; Bed of Nails; Probability; Pelicans

1986 · 30m

E5 · Bees; Blood Pressure; Bruises Chat; Hiccups

1986 · 30m

E6 · Telescopes; Food Myths; Manatee

1986 · 30m

E7 · Fossil Dig; Mirrors; Frostbite Chat; Elephants

1986 · 30m

E8 · Wind Blow; Baldness; Soda Pop Fizz Chat; Cranes

1986 · 30m

E9 · Alcohol; Helium Balloons; Backache Chat; Roller Coaster; Snow Monkeys

1986 · 30m

E10 · Diabetes; Frozen Food; Flat Feet Chat; Battery Inventions; Alligators

1986 · 30m

E11 · Immune System; Skiing; Blimp; Beaver

1986 · 30m

E12 · Pterodactyl; Rube Goldberg; Black Box Chat; Quickies

1986 · 30m

E13 · Baseball Bats; Polarized Light; Dreams Chat; Inventors Fair; Falcon

1987 · 30m