Getting to the root cause/s of the global insect absence is important because as the bottom of the food web goes in Holocene extinction event, so might we starve due to lack of pollinators and other vital insects and fauna that we depend on for raising crops. I hear it frequently on Thom Hartmann and just the other day on Paul Beckwith's YT channel about truckers and travelers not seeing bugs on their vehicles on long trips across Canada, US and Europe. I wonder if Russia, China, Brazil, Argentina and India are the same: do they also not have to clean their vehicles of bugs from long trips as was the case 30-40 years ago?