Sep 5, 2013 — A new study that relies on brain-imaging of cerebral blood flows suggests that human speech and complex tool-making skills emerged together almost two million years ago. Commentator Barbara J. King digs through the evidence and offers her own take on this age-old question.
Apr 11, 2013 — A prominent male chin, thought to be a marker for virility, is one of the characteristics that's part of the so-called universal facial attractiveness hypothesis. But a look at chins from around the world raises doubts.
Mar 1, 2013 — Until recently, our brains' way of connecting food with love and a sense of well-being was purely a good thing. But in a world where it's possible to feast every day, it can be a problem.