September 27, 2010 2:52 pm Going Green with Ali Shapiro Ali Shapiro, author of “The Roots of Going Green”, shares tips for keeping your immune system up and what to do if you get sick. US & World Videos 1:32 Police search for man accused of kidnapping woman at knifepoint outside Bucks County Wawa 1:12 Police investigate a shooting in Elsmere that left a 17-year-old boy in critical condition 0:20 Officials investigate a deadly crash on the 202 Parkway involving a semi-truck 1:49 South Philly residents find ways to beat the summer-like heat, starting with water ice 9:46 Another NJ earthquake: The Lineup