What science tells us about the health risks of Roundup

In a 7-2 ruling, the Supreme Court sided with the manufacturer of Roundup, overturning a Missouri jury award for a man who claimed the herbicide caused cancer. The decision is expected to block thousands of similar lawsuits across the country. Geoff Bennett discussed more with Dr. Chadi Nabhan, author of "Toxic Exposure: The True Story behind the Monsanto Trials and the Search for Justice." PBS…