Another YouTube #shorts from Joe, your favorite science dad. When you're done, watch my latest video about why the second is the most precise measure humans have ever… measured: youtu.be/mg9yc7_7BWc Join us on Patreon! patreon.com/itsokaytobesmart Twitter www.twitter.com/DrJoeHanson www.twitter.com/okaytobesmart Instagram www.instagram.com/DrJoeHanson www.instagram.com/okaytobesmart Facebook www.facebook.com/itsokaytobesmartpbs/

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