Public Health Activists, Farmers, Researchers and members of the public packed a State EPA hearing Wednesday to set the official safe level for the herbicide Glyphosate, a top-selling herbicide for home and farming use. It's the main ingredient in Round Up and other weed killers...Glyphosate was recently put on the State’s Proposition 65 list of substances that can cause cancer. Vic Bedoian reports from Fresno.