President Obama spoke Tuesday in the Rose Garden of the White House. He was flanked by the co-chairmen of the BP Oil Spill Commission, former EPA Administrator Bill Reilly (left) and former Florida Sen. Bob Graham. Pablo Martinez Monsivais/AP hide caption

itoggle caption Pablo Martinez Monsivais/AP

A question: can you predict Alzheimer's by a careful analysis of someone’s writing? An English professor has suggested there are tell-tale signs of early Alzheimer's in Agatha Christie’s book, Elephants Can Remember. AFP/Getty Images hide caption

itoggle caption AFP/Getty Images

Teens who bum cigarettes every now and then find that addiction can happen before they know it. iStockphoto.com hide caption

itoggle caption iStockphoto.com

New research finds that socializing kids to drink at the family table -- often referred to as the "European drinking model" -- doesn't necessarily translate to more responsible drinking patterns. Marco Di Lauro/Getty Images hide caption

itoggle caption Marco Di Lauro/Getty Images