Now, a new study out of Purdue University in Indiana has not only confirmed, once again, that clothianidin is killing off bees, but also that clothianidin's toxicity is systemic throughout the entire food chain, which could one day lead to the catastrophic destruction of the food supply.

The study, which was published in the online journal PLoS ONE, investigated the various methods and routes by which a class of insecticides known as neonicotinoids, which includes clothianidin, are harming honey bees. They discovered that both clothianidin and thiamethoxam, another component of neonicotinoid insecticides, persist in "extremely high levels" in planter exhaust material produced during the planting of crops treated with these insecticides, which runs contrary to industry claims that the chemicals biodegrade and are not a threat.

The research team also found neonicotinoid compounds in soil, including in fields where the chemicals were not even sprayed, as well as on various plants and flowers visited by bees.