CHAMPAIGN — Actress Tilda Swinton lightened the mood on the fourth day of Roger Ebert's Film Festival, leading a conga line dance to a Barry White song. After that, the Spanish director Pablo ...

A seemingly spontaneous conga line by a pair of captive chimpanzees might tell us something about how humans first learned to dance, scientists behind a new study say.

Two chimpanzees housed in a zoo in the US have sparked the question about how human dance evolved after being observed performing a duo dance-like behavior, similar to a human conga line.