A widely used class of insecticides poses a threat on par with that of DDT and is harming ecosystems worldwide, a global team of scientists finds.
Their damning analysis based on 800 peer-reviewed reports, the Worldwide Integrated Assessment of the Impact of Systemic Pesticides on Biodiversity and Ecosystems (WIA), puts a spotlight on neonicotinoids, or "neonics," whose use they say poses a threat to global biodiversity.According to Wikipedia, the pesticides are produced and marketed by some of the largest chemical corporations across the globe: Bayer, Dow Chemical, Sumitomo Chemical, Sygenta, etc.
See also this article from Friends of the Earth: "New tests find bee-killing pesticides in 51% of “bee-friendly” plants from garden centers across U.S. and Canada".