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Currently Playing: Why does boiled water freeze faster?

We still don't know why recently boiled water freezes faster! A Tanzanian teen named Eraste Bartholomeo Mpemba was doing ice-cream experiments (yum!) when he found that recently boiled milk froze faster than room temperature milk - and he wondered why! Sometimes science is about knowing when you don't understand something yet! Made with our #stembesties at @CBSUnstoppable