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Why are we warm-blooded?

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Staying warm by making your own heat takes a ton of energy. And that brings up a paradox, because creating your own body heat is incredibly expensive. The largest animals on Earth have to spend most of their day just eating enough to keep their heat engines running. So why aren’t we cold-blooded like crocodiles? It’s Okay To Be Smart digs into the science of warm-blooded organisms.

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11/21/2021 • 
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