The colors a species can perceive is dictated by the types and number of visual pigments found in the retina. How might our color vision system have evolved?

A chimp named Santino at a Swedish zoo seems to be forcing a more nuanced picture of what types of anticipation and planning our closest relatives are capable of.

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.

Larry Engel discusses the challenges and joys of filming Alan with the chimps at the North Carolina Zoo.

We went to the North Carolina Zoo to meet the chimpanzees -- and evolutionary anthropologist Brian Hare. Here's what happened...

In an article in the journal Current Biology researchers describe directly observing bonobos hunting not just small forest creatures but other primates as well.

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?