For Women's History Month and International Women's Day, we invited readers share what they learned from extraordinary women in their lives.

Is religion under attack in Arizona? An Episcopal reverend says no and explains why he opposes the controversial bill.

From a sheep ranch in Western Australia comes the oldest slice of Earth we know.

Cassiopeia A was a star more than eight times the mass of our sun before it exploded in the cataclysmic, fiery death astronomers call a supernova.

The "jelly doughnut" rock that seemed to appear out of nowhere on Mars last month did not fall out of an extraterrestrial pastry box.

Sean Callebs has suffered from debilitating panic attacks since he witnessed the electric chair execution of a convicted killer. He writes about how he got better.

John Sutter says the lack of required sex ed is puzzling and negligent, given the state has the nation's highest rate of reported rape

Alex Storozynski goes to Ukraine to find his roots, and finds the evidence of the atrocities his family endured under the Communists and Nazis.