A new study published in Nature from the University of Vienna has found that land-based sources release more than 20 times as many microplastic particles into the atmosphere as the ocean, challenging previous assumptions about the origins of airborne microplastics. The research, led by Andreas Stohl and Ioanna Evangelou, compared 2,782 atmospheric measurements with computer models and determined that earlier emission estimates were significantly overestimated, according to the university. Microplastic particles have been detected in remote regions worldwide, raising concerns about inhalation and environmental deposition. Earlier studies had pointed to the ocean as a major contributor, but the new findings…