Wildflowers on farms—not just crops—can expose bees to neonicotinoids

Since bee colonies started declining at alarming rates over the past few decades, some scientists have identified a group of pesticides called neonicotinoids that are commonly used on crops as a potential contributor. Now one team reports in ACS' journal Environmental Science & Technology that bees could be getting an unexpected dose of neonicotinoids from wildflowers on farms. Their results suggest past studies may have underestimated the bees' exposure to these compounds.