† Department of Chemistry and the Materials Research Center, Northwestern University, Evanston, Illinois 60208-3113 ‡ Center for Dielectric Studies, Materials Research Institute, The Pennsylvania ...

There have been 45 men elected as president in U.S. history, but only a few appear on coins and bills that most people ...

Are your old pennies worth millions? Experts say you shouldn't bank on it. But some are worth hundreds of dollars. Here's how to check yours.