Like machines, as people we are also constantly categorizing the faces of others. We capture, classify and analyze each other’s physiognomic features. But are we aware of our daily biases, of the way ...

This, the collective shock implied, was not what a 37-year-old is supposed to look like. But millennials — not just celebrities but real people, too — really do seem to be aging more slowly.

Many people hold ... because of factors like cultural preferences, geographic migration and even random events continue to shape the human genome. But what might humans look like in 50,000 years ...