Sezon 7
Bölümler
1 Roller Coaster; Quicksand; Jelly-Side Down; Lemons; White Tiger 14 Eki 1989 2 Bee Stings; Bowling; High-Speed Elevator; Lemons; Boa 21 Eki 1989 3 Race Cars; Spider Webs; Lemons; Tropical Fish 28 Eki 1989 4 Rain Forest; Buoyancy; Pouring Catsup; Lemons; Cold Remedies 4 Kas 1989 5 Caffeine; Butterfly Migration; Autumn Leaves; Lemons; Doppler Effect; Sloth 11 Kas 1989 6 Surfing; Geothermal/Volcanoes; Luau; Sugar Processing; Hawaiian Language; Eel 18 Kas 1989 7 Whale Watch; Sunspots; Lemons; Skunk 25 Kas 1989 8 Milky Way; Epilepsy; Lemons; Inventors Fair; Cuttlefish 2 Ara 1989 9 DNA; Rube Goldberg Contest; Parrot Chat; Chewing Tin Foil; Seahorse 9 Ara 1989 10 Marathons; Celestial Navigation; Cataracts Chat; Lemons; Echidna 16 Ara 1989 11 Spinal Cord; Glue; Lemons; Dog Behavior 23 Ara 1989 12 Cheese; Aging; Appendix Chat; Wolves 30 Ara 1989 13 Supercomputer; Greenhouse Effect; House Creaking; Owl 6 Oca 1990