Society for Science/Chris Ayers

It seems that nobody—and no body part—is safe from microplastics. In a recent study, researchers found traces of plastic in the testicles of both dogs and humans. The potential health impacts of this discovery are not yet clear, but the team suggests it may help explain why men’s sperm counts have declined over time.

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AP Photo/Luca Bruno, File
Mario Tama/Getty Images)

New research this week is the latest to show that microplastics have polluted just about everywhere on Earth. Scientists discovered plastic particles in cloud samples collected from atop a mountain in Eastern China.

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Nowhere is safe from microplastics. Tiny plastic pieces are in waterways, in our bodies, and now researchers have found microplastics in clouds on top of Mount Fuji and Mount Oyama.