yet epa allowed imidacloprid on the u.s. market a year later. ter decadeof exposur the consequences epa scientists once warned about are now confirmed by the task force on systemic pesticis. >> and unrtunately, these chemicals are often, and i would say most of the time, released before there is adequate information to show whetr they are harmful in the environment. i think neonicotinoids are a prime example of that. >> epa assesses risk posed by pesticides prior to their release on the market. safety studies are typically conducted and paid for by pesticide manufacturers on their own product. epa says its decisions are informed by the best science available. in addition to studies by manufacturers, epa scientists review pesticide studies from peer-reviewed scientific journals and data from a wide variety of sources when they are available. but studies on pesticide safety that come out after a pesticide is on the market may not be evaluated by epa until a pesticide mes up for review, a process that can takas longs 15 yrs. farmers like drew stabl