Season 4

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

1986-10-11 • 30 min

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

1986-10-18 • 30 min

3. Hypothermia; Moon; Voice Change Chat; Yak

1986-10-25 • 30 min

4. Sponges; Bed of Nails; Probability; Pelicans

1986-11-01 • 30 min

5. Bees; Blood Pressure; Bruises Chat; Hiccups

1986-11-08 • 30 min

6. Telescopes; Food Myths; Manatee

1986-11-15 • 30 min

7. Fossil Dig; Mirrors; Frostbite Chat; Elephants

1986-11-22 • 30 min

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

1986-11-29 • 30 min

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

1986-12-06 • 30 min

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

1986-12-13 • 30 min

11. Immune System; Skiing; Blimp; Beaver

1986-12-20 • 30 min

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

1986-12-27 • 30 min

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

1987-01-03 • 30 min