Found: The Genes Behind Big Human Brains

With a new pair of studies on a handful of genes unique to the genus Homo, researchers took a big step toward solving one of the most important questions about our evolution — why and how human brains got so big.
Understanding why the Homo brain became significantly larger than the gray matter of any other primate has been a dominant question in the field ever since we first turned our big human brains toward the topic of evolution.In just the last week,