Angela Stimpson donated a kidney to a complete stranger. Why did she do it? Researchers found that the brains of Stimpson and other altruists are sensitive to fear and distress in a stranger's face.
The orbital probe will study how the solar wind interacts with the red planet's thin atmosphere.
More than 120 leaders are expected to attend the one-day summit sponsored by the United Nations. They have been instructed to arrive Tuesday with "bold ideas" to slow the rise in global temperatures.
Peshmerga forces say they are still engaged in fierce battles with Islamic State militants. The fighting has triggered a mass exodus of Kurdish refugees into Turkey.
Busy schedules and long hours of training are partly to blame for the ever-shrinking volunteer pool.
It's not violence on the job that makes some pro football players beat their wives or children, psychologists say. It's often childhood experience, fanned by a culture that accepts such behavior.
Palestinian kids in Gaza went back to school this past week in buildings damaged by the war, with children homeless and traumatized, and more than the usual overcrowding they face every year.
The People's Climate March was timed to draw the notice of world leaders gathering for this week's U.N. Climate Summit in New York.
What do you think of disciplining a child with a tree branch? We talk about it on Macon&Eggs this week.
Scientists hope NASA's MAVEN probe, which went into orbit Sunday night, will provide insight into why the Martian climate changed drastically billions of years ago.