Links
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YouTube channels
Science/physics: Vsauce PBS Space Time Veritasium SciShow
Earth and Life: PBS Eons
Human History: History Time
Languages: Langfocus
Asian food: The Food Ranger
All kinds of topics: CrashCourse
Other links
alpha-Centauri episode playlist, a popular science astrophysics TV format [German]
NASA Astronomical Picture of the Day
Evolution website of the University of Waikato
International Big History Association
The world history section of the Khan Academy
Freemanpedia about world history