It’s been a rough day for Monsanto, the maker of the weedkiller Roundup. On Friday a jury awarded a California groundskeeper $289.2 million, concluding that exposure to Roundup caused his cancer. On Monday stock in Bayer, the company that acquired Monsanto earlier this year, tumbled 10 percent. Click the audio player above to hear the […]

Chlorpyrifos has helped protect crops from pests since 1965, but it's also been linked in studies to low-IQ babies and dead fish.