A scientist skied into remote areas of the Sierra Nevada to take samples of freshly fallen snow. Everywhere she looked, she found microplastics.
"The findings are a sober reminder of plastic’s global impacts... and the importance of research and action to reduce plastic pollution." https://www.latimes.com/environment/story/2026-11-07/uc-riverside-scientist-skied-deep-into-sierra-to-track-microplastics-in-snow