Scientists call this phenomenon emotional mimicry. Biologists and psychologists consider this automatic matching of another’s ...

Deep in the rainforest, the monkeys are yodeling. Their wild calls echo across the foliage, sending signals of sex and survival. For decades, scientists have studied why they make these sounds, but ...

Humans not only recognize emotions on the faces of monkeys and apes but also unconsciously mimic those expressions.

From tool-using chimpanzees to puzzle-solving capuchins, the primate world is packed with surprising brainpower. But how do ...

While this is by no means a quantum leap for HIV treatment in humans, any AIDS progress is great AIDS progress. Especially when the progress is in our furry monkey relatives, who are responding ...