05:11

Why Are We Afraid of the Dark?

04:13
04:21
04:28
06:28
04:32

What Happened to Mad Cow Disease?

05:06
05:44
04:00
02:45
02:36
04:50
05:58
02:17
02:15
26:08
04:54
06:07
04:13
05:36

Why Is My Pee Green?

02:56
03:02

Why Is the Ocean Blue?

05:56
09:34
04:31
24:44

SciShow: Sugar Compilation

19:51
02:35
02:46
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