Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to ...

The human lie isn’t a flaw so much as a feature, one that evolution spent hundreds of millions of years perfecting.

That urge comes from a time in early humanity when understanding how to approach animals was a major part of survival.

It's hard to imagine a world where Homo sapiens could have gotten very far without hands. Over thousands of years, our species has been heavily reliant on palms and fingers to accomplish a wide ...

Humans spend a great deal of time trying to smell good. We wash, deodorize and perfume our bodies daily, suggesting body odor must matter. Yet scientifically, the picture is far less straightforward.

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The human face is strikingly distinct from our fossil cousins and ancestors—most notably, it is significantly smaller, and more gracile. However, the reasons behind this change remain largely unknown.

We feel it every once in a while: a lump in our throat, a burning in our eyes, and then warm tears welling up in them. Whether it’s joy, grief, awe, or something undefinable, the experience is ...