Engelmann says that from the beginning of the Western intellectual tradition, people thought that only humans are rational.

Chimps may revise their beliefs in surprisingly human-like ways. Experiments showed they switched choices when presented with stronger clues, demonstrating flexible reasoning. Computational modeling ...

You probably know someone who takes Halloween a little far with tons of decorations. A Colorado man is that way, but his haunted forest has a bigger purpose. For the last four years, Kevin Holt has ...