Mailbag #2 — Wait But Why

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We have a whole lot to talk about.

Last month, I emailed readers announcing an upcoming mailbag post—the WBW post version of an AMA. 1,500 questions poured in—remarkably interesting, creative questions on a wide range of topics. I picked some for this round, and we’re keeping the rest in a database that I’ll go back to for future mailbags ( [email protected] is always open, so send questions anytime and we’ll add them to the list). There’s a lot to cover, so let’s get going. Question from my 7-year-old: How many germs would you have to put together to actually be able to see them? What would it look like? – Kir

Mailbag #2 — Wait But Why

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