Did you know math could be fun? Of course you did! Vi Hart produces fun quirky videos about the wide world of mathematics. Videos include helpful doodles to illustrate her points.
SciShow Space explores the universe a few minutes at a time.
“From facts about astronomy and cosmology to the latest in space news, we take you through the cosmos -- no space suit required!”
My personal favorite channel, the YouTube description says it all:
“Tons of awesome courses in one awesome channel: John Green teaches you World History 2; Hank Green teaches you Anatomy & Physiology; Phil Plait teaches you Astronomy; Craig Benzine teaches you U.S. Government and Politics.”
Check out the playlists for past courses in World History, Biology, Literature, Ecology, Chemistry, Psychology, and US History.
Michael Stevens often touches on philosophical and scientific queries to warp your brain.