Newton's Apple - Season 4
1 - Flight Trainers; Snake Bite; Hedgehoh Chat; Cold Remedies
Air Date: October 11, 1986
2 - Caves; Lasers; Skin Wrinkle Chat; Whale Birth
Air Date: October 18, 1986
3 - Hypothermia; Moon; Voice Change Chat; Yak
Air Date: October 25, 1986
4 - Sponges; Bed of Nails; Probability; Pelicans
Air Date: November 1, 1986
5 - Bees; Blood Pressure; Bruises Chat; Hiccups
Air Date: November 8, 1986
6 - Telescopes; Food Myths; Manatee
Air Date: November 15, 1986
7 - Fossil Dig; Mirrors; Frostbite Chat; Elephants
Air Date: November 22, 1986
8 - Wind Blow; Baldness; Soda Pop Fizz Chat; Cranes
Air Date: November 29, 1986
9 - Alcohol; Helium Balloons; Backache Chat; Roller Coaster; Snow Monkeys
Air Date: December 6, 1986
10 - Diabetes; Frozen Food; Flat Feet Chat; Battery Inventions; Alligators
Air Date: December 13, 1986
11 - Immune System; Skiing; Blimp; Beaver
Air Date: December 20, 1986
12 - Pterodactyl; Rube Goldberg; Black Box Chat; Quickies
Air Date: December 27, 1986
13 - Baseball Bats; Polarized Light; Dreams Chat; Inventors Fair; Falcon
Air Date: January 3, 1987