Airborne Microplastics Add Climate Forcing

A Nature Climate Change study led by Fudan University finds that colored and aged airborne microplastic particles absorb sunlight and likely produce net atmospheric warming at a non‑trivial level — the authors estimate roughly one‑sixth the warming effect of black carbon, though uncertainties are large. The finding implies current climate models may be missing a source of radiative forcing and that plastic pollution policy could be justified on climate grounds as well as health and ecosystem grounds. — If borne out, this creates a new policy intersection between plastic waste management and climate mitigation, shifting some regulatory and modeling priorities.