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Mark Rober
SCIENCE CLASS #3- Why is the Sky Blue?
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SCIENCE CLASS #2- Does Farting Make You Weigh Less?

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Mark Rober

22,100,000 subscribers

2 years ago
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This is a juicy one. 70% people get this one wrong. I stream science LIVE M-W-F 1pm PT. NEW PDF WITH A QUIZ FORM THAT WORKS NOW!!! https://www.dropbox.com/s/5giflfs8y9new5x/SCIENCE%20CLASS-%202.pdf?dl=0