Tears are unique to humans, but distress calls are common among most other mammal and bird young, often when separated from their mothers. Crying extends far beyond infancy. A University of Pittsburgh ...

Humans are the only animal to produce emotional tears. Asking questions about this behavior can help us better understand how we live our lives. That question has many answers. To start, there are ...

This article was featured in One Great Story, New York’s reading recommendation newsletter. Sign up here to get it nightly. Crying has been one of the most popular activities of the past four to eight ...