The world's most widely used insecticide has for the first time been officially labelled an "unacceptable danger to bees feeding on flowing crops. Scientists at the European Food Safety Authority (EFSA), together with experts from across Europe, concluded on Wednesday that for imidacloprid "only uses on crops not attractive to honeybees were considered acceptable" because of exposure through nectar and pollen. Such crops include oil seed rape, corn and sunflowers. EFSA was asked to consider the acute and chronic effects on bee larvae, bee behaviour and the colony as a whole, and the risks posed by sub-lethal doses. But it found a widespread lack of information in many areas and had stated previously that current "simplistic" regulations contained "major weaknesses".. Read more.