The Vexing Mental Tug-of-War Called Morality By Kristin Ohlson, Discover magazine Would you kill a crying baby to save yourself and others from hostile soldiers outside? Neuroscience offers new ways to approach such moral questions, allowing logic to triumph over deep-rooted instinct. You arrive at the...

"Birds do it. Bees do it. Termites and ants, while not so lyrical, also do it. They all live in social groups. All cooperative creatures have an important similarity: their social structures do not operate arbitrarily. But in the familiar social species called Homo sapiens, social rules are usually...