August 23, 2024

Archaeologists keep finding older and older cave art. Here’s what it could tell us about how humans evolved over time. Plus, a new study measuring microplastics in organs of the recently deceased found that about two dozen brain samples were 0.5% plastic by weight. And, in “Bite,” author Bill Schutt takes readers on a dental adventure spanning half a billion years and much of the animal kingdom.

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