Chimps "Mourn" Nine-year-old's Death?

May 13, 2011—Are chimpanzees mourning the deaths of a nine-year-old male and infant? Researchers have released never-before-seen video of a chimp community in Zambia reacting to the deaths.

Though the scientists hesitate to use the word "mourning," at least one imagines the footage will make people "think for a moment what might be possible in the minds of other primates."