Animals

When Bats Squeak, They Tend To Squabble

Researchers have found new clues to how bats communicate. And it turns out they tend to argue — a lot. The research could lead to a broader understanding of animal communication.

'Panda Grandpa' Pan Pan Dies In China

Pan Pan, who died this week at the age of 31, was known as the "panda grandpa": He has some 130 descendants worldwide, accounting for a quarter of the world's captive giant pandas.