Jon Sperling secretly spread a non-native species across the Northeast. “It’s insane what this guy was doing,” a biologist ...

Behind the scenes at a Chicago zoo, chimpanzees who spent years entertaining humans are learning to befriend their own kind.

Among the more bizarre and often humorous anecdotes is one from the late 1980s, when Tyson, known for his impulsive nature ...

This advertisement has not loaded yet, but your article continues below. Images of the tests showed what appeared to be a BMW sedan being destroyed and old models of tanks being blown up More than ...