January 18, 2010 8:30 pm Mel Gibson: “Sobriety Is Cool” Mel Gibson talks candidly about his 4-year-old sobriety and his current attempt to quit smoking. US & World Videos 1:40 Democrats say Big Oil misled public for decades about climate change 1:45 NYPD enters Columbia University in riot gear to clear protest 4:28 ‘Apples Never Fall' and ‘Jurassic Park' star Sam Neill reveals his real name 3:21 Katy Perry's surprising regret about cheeseburger Met Gala look 1:49 New guidelines say women should be screened every other year for breast cancer starting at 40