EPA Releases Preliminary Risk Assessment for Insecticides Potentially Harmful to Bees From the Environmental Protection Agency: WASHINGTON– The U.S. Environmental Protection Agency (EPA) announced a preliminary pollinator risk assessment for the neonicotinoid insecticide, imidacloprid, which shows a threat to somepollinators. EPA’s assessment, prepared in collaboration with California’s Department of Pesticide Regulation, indicates that imidacloprid potentially poses risk to hives when …