Here is an article about the most recent paper on widespread environmental contamination with neonicotinoids, Controversial insecticides pervasive in Great Lakes tributaries. This is by the US Geologic Survey, which has been taking a lead in these assessments for the past several years, unlike the EPA and USDA which seem to avoid any assessments and are strangely silent. Also, check out this audio piece, Insecticides showing up in Great Lakes rivers, on Ann Arbor’s NPR station, Michigan Radio.