Bee Stings; Bowling; High-Speed Elevator; Lemons; Boa

30 min

Race Cars; Spider Webs; Lemons; Tropical Fish

30 min

Rain Forest; Buoyancy; Pouring Catsup; Lemons; Cold Remedies

30 min

Caffeine; Butterfly Migration; Autumn Leaves; Lemons; Doppler Effect; Sloth

30 min

Surfing; Geothermal/Volcanoes; Luau; Sugar Processing; Hawaiian Language; Eel

30 min

Whale Watch; Sunspots; Lemons; Skunk

30 min

Milky Way; Epilepsy; Lemons; Inventors Fair; Cuttlefish

30 min

DNA; Rube Goldberg Contest; Parrot Chat; Chewing Tin Foil; Seahorse

30 min

Marathons; Celestial Navigation; Cataracts Chat; Lemons; Echidna

30 min

Spinal Cord; Glue; Lemons; Dog Behavior

30 min

Cheese; Aging; Appendix Chat; Wolves

30 min

Supercomputer; Greenhouse Effect; House Creaking; Owl

30 min