White spots appear on the teeth when the tooth’s enamel starts decomposing due to plaque. However, a wide range of cases can bring this erosion on and lead to decalcification. Here’s a quick overview ...

CHICAGO – The White Sox have agreed to terms with free agent infielder/outfielder Josh Rojas on a one-year-deal, a source told MLB.com on Thursday. The club has not confirmed the deal. Rojas, 30, was ...

This story appears in the October 2012 issue of National Geographic magazine. We have all held leaves, driven miles to see their fall colors, eaten them, raked them, sought their shade.