New study published by plos demonstrates a 75% decline in flying-insect biomass over the last 27 years. No confirmed cause as of now, though it's likely a multitude of factors including habitat destruction, global warming, land use are to blame. The use of pesticide is also mentioned briefly. Source: journals.plos.org/plosone/article?id=10.1371/journal.pone.0185809 In closing I have to say, this is EXTREMELY serious news. The loss of biomass is severe and rapidly changing, the effects of which may cause a cascade destroying or disrupting food webs globally. Be good to our planet everyone.