May 6, 2009 5:26 pm Walnuts Could Lower Breast Cancer Risk Women who add walnuts to their diets as a healthy snack may also be lowering their risk for breast cancer. US & World Videos 1:40 Democrats say Big Oil misled public for decades about climate change 5:44 May Day demonstrations, Gaza war protests continue across Bay Area 3:27 May Day demonstrations planned, Gaza war protests continue across Bay Area 2:27 Junk fee law bans restaurant surcharges 1:45 NYPD enters Columbia University in riot gear to clear protest