It sounds gross, but stick with us: Researchers are working on recycling astronauts' waste into food for edible stuff. Learn how (and why) in this classic episode of BrainStuff.
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BrainStuff Classics: Why Is Cramming the Worst Way to Study?
05:55

How Can We Separate Ninja Fact from Ninja Fiction?
07:38

How Did 'Bourgeois' Become a Bad Word?
07:36