A small group of distant worlds may hold the clues to life beyond Earth. Astronomers searching for life beyond Earth have narrowed down the most promising places to look. Out of more than 6,000 known ...

Science has given us vaccines, space telescopes, and smartphones. It has also given us doctors blowing smoke where smoke should never go. Even the heavyweights of science have had their off days. And ...

Today: Signs of spring: flower buds, leaves on the trees, beetle larvae, and the Spring Triangle.

A daylight fireball brighter than the full moon speeds across the sky above Pittsburgh on St. Patrick's Day, Tuesday. The meteor was traveling around 45,000 miles per hour. Seconds after this photo ...