Try this experiment — all you need is a ball, pen, candle, match, protractor and a small rock. Draw a line bisecting the ball, top to bottom. Light the candle. Turn off the light. Holding the ball ...

It's Dec. 1, but despite the incoming snow and ice, the official start to winter is still three weeks out. Here's when winter officially begins.

Mars has lost immense amounts of water over it lifetime, and scientists aren't sure exactly how. New research hints that the planet's violently varying tilt may be a key factor. When you purchase ...