PrimeWire

You can now watch the entire Scientific American Frontiers Season 15 Episode 4 movie online in high-definition quality, complete with English subtitles for a better viewing experience. Best of all, there’s no need to download anything—simply stream it directly from your device anytime, anywhere.

Scientific American Frontiers: A visit with an engaging if unruly bunch of cousins that we formally broke up with about 6 or 7 million years ago - with whom we share almost all of our genes but not a lot of our lifestyle. Why the difference? Maybe it's in how we learn.