Nonhuman primates clearly do more than just screech meaningless sounds at each other, but what are the limits of their communication?
Scientists are getting better and better at using DNA to figure out when key evolutionary events happened.
Some research suggests that throughout our evolution an innate tendency toward fighting shaped human anatomy. But anthropologists are sharply divided on the matter.
Why have humans taken mammalian sex to a whole new level?
Primates are in big trouble. And it's our fault.
What is it about islands that makes big creatures turn small?