I’m no Mr. Smartypants entomologist, but if you’re looking for the reason whole populations of insects are dying, mightn’t you first consider the use of, um, insecticides? From 30% to 90% of honeybee colonies have collapsed worldwide since 2006 depending on the region, with the figure standing at 50% in the U.S. After considering disease, infestations by competing insects and other variables, investigators at the Harvard School of Public Health finally found that the pesticide imidacloprid plays a big role. Next bulletin from the kids from Cambridge: Big Hole in Hull May Have Been Factor in Sinking of Titanic.