The ancestors of humans and chimpanzees may have begun genetically diverging from one another 13 million years ago, more than twice as long ago as had been widely thought, shedding new light on the process of human evolution, researchers say.
Instead of prompting a national celebration, the recovery of POW Bowe Bergdahl sparked controversy. Live Science looks at some questions the case has raised: What is desertion? How common is it? What will happen to Bergdahl?