The team identified nine different types of polymers and one type of rubber in the airborne microplastics that ranged in size from 7.1 to 94.6 μm each liter. That is 00:26 gallons of cloud water testing contained 6.7 to 13.9 pieces of plastic. QuOte if the issue of plastic air pollution is not addressed proactively, climate change and ecological risks may become a reality, causing irreversible and serious environmental damage in the future. End quote. That according to lead author of the research, Hiroshi Okochi of Waseda University