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Season 7
7x1
Roller Coaster; Quicksand; Jelly-Side Down; Lemons; White Tiger
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7x4
Rain Forest; Buoyancy; Pouring Catsup; Lemons; Cold Remedies
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7x5
Caffeine; Butterfly Migration; Autumn Leaves; Lemons; Doppler Effect; Sloth
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7x6
Surfing; Geothermal/Volcanoes; Luau; Sugar Processing; Hawaiian Language; Eel
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7x9
DNA; Rube Goldberg Contest; Parrot Chat; Chewing Tin Foil; Seahorse
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7x10
Marathons; Celestial Navigation; Cataracts Chat; Lemons; Echidna
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7x13
Season finale
Supercomputer; Greenhouse Effect; House Creaking; Owl
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