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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.
Help support Crash Course at Patreon.com/CrashCourse.
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