By Ashley Welch, Scientific American Anyone who has ever devoured a triple-chocolate brownie after an intense workout knows how tempting it can be to indulge after behaving virtuously. A new study suggests, however, that we often apply this thought process to inappropriate scenarios, giving ourselves...

From Science Daily Imagine a runaway boxcar heading toward five people who can't escape its path. Now imagine you had the power to reroute the boxcar onto different tracks with only one person along that route. Would you do it? That's the moral dilemma posed by a team of Michigan State University...

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...

By David Brooks, The New York Times The story of evolution, we have been told, is the story of the survival of the fittest. The strong eat the weak. The creatures that adapt to the environment pass on their selfish genes. Those that do not become extinct. In this telling, we humans are like all other...

By Peter Singer, in New Scientist The Enlightenment philosopher David Hume pointed out long ago that no combination of statements about what "is" the case could ever allow one to deduce what "ought" to be. After all, in deductive arguments, the truth of the conclusion is already contained...

By Katherine Harmon | Scientific American "If love is said to come from the heart, what about hate? Along with music, religion, irony and a host of other complex concepts, researchers are on the hunt for the neurological underpinnings of hatred. Functional magnetic resonance imaging (fMRI) has begun...

By Edward O. Wilson from The Atlantic "ENTURIES of debate on the origin of ethics come down to this: Either ethical principles, such as justice and human rights, are independent of human experience, or they are human inventions. The distinction is more than an exercise for academic philosophers...