Live Science

What's Hot This Week Addiction Now Defined As Brain Disorder, Not Behavior Problem LiveScience Staff Addiction is a chronic brain disorder and not simply a behavior problem involving alcohol, drugs, gambling or sex, experts contend in a new definition of addiction, one that is not solely related to problematic substance abuse. Weird! Our Universe May Be a 'Multiverse,' Scientists Say by Clara Moskowitz, LiveScience Senior Writer Is our universe just one of many? While the concept is bizarre, it's a real possibility, according to scientists who have devised the first test to investigate the idea. Sponsored by: Best Science Photos of the Week - Aug. 13, 2011 Melting Sea Ice Leads to Walrus Stampedes, Scientists Warn Smile! Face Recognition IDs Chimps from Photos Are Today's Youth Less Creative & Imaginative? As Schools Cut Recess, Kids' Learning Will Suffer, Experts Say