Humanity

The Salton Sea was once known as California's Desert Riviera. Today it's struggling to stay alive, despite residents' best efforts at revitalization.

• By Boyz Bieber

Evidence shows humans killed the mammoth deep in the Arctic—45,000 years ago.

• By Nathan Collins

A new study reveals that expression recognition software performs way better than humans at discriminating between real and fake emotion.

• By Paul Bisceglio

That’s the tentative conclusion of two researchers, who report that frequent players of immersive games are apparently less sensitive to pain.

• By Tom Jacobs