Alan Alda explores how much humans and chimps have in common, and what sets us apart. Watch the full episode now.

Scientists are attacking the question of how we became human from a number of new directions – in addition to analyzing the evidence of ancient fossils.

Researcher Brian Hare is an advocate for eliminating the chimpanzee pet trade. In the wake of the chimp attack, Brian explains the science behind his stance.

Gustavus Adolphus College hosted a conference last October focused squarely on the idea of “The Human Spark.” We've met with many of the speakers.

All great apes, including humans, have vocal tract air sacs that they use to call out loud. Ours have evolved to be smaller than the other apes’, leaving them with louder voices.

There are big differences between apes and humans, but we do share the majority of our DNA and other characteristics. Should some "human rights" extend to our great ape cousins?

This video presents a reporter's visit to the Great Ape Trust, where apes communicate with researchers with a lexigram. But is this really language?