Why Are Some People Left-Handed?

Why are there so few left-handed people? Can people do things on instinct alone? Why haven’t babies evolved to sleep through the night? We’ve heard of ice breakers, but what are some ice makers? How do I decide if I should have kids? …Hank and John Green have answers!

If you're in need of dubious advice, email us at hankandjohn@gmail.com.

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