How Mitochondrial Eve connected all humanity and rewrote human evolution

This month marks the twenty-fifth anniversary of the discovery of Mitochondrial Eve, the common ancestor of every human alive today. Here's everything you need to know about why the mother of humanity is so important. » 1/24/12 3:07pm 1/24/12 3:07pm

Why humans are all much more related than you think

All humans can trace their family tree back to a surprisingly small group of common ancestors. Every person on Earth's most recent common ancestor might have died less than 2000 years ago. » 4/13/11 9:24am 4/13/11 9:24am