It’s raining plastic: microscopic fibers are falling from the sky

Plastic was the furthest thing from Gregory Weatherbee’s mind when he began analyzing rainwater samples collected from the Rocky Mountains.“I guess I expected to see mostly soil and mineral particles,” said the US Geological Survey researcher. Instead, he found multicolored microscopic plastic fibers.

The discovery, published in a recent study titled “It is raining plastic”, raises new questions about the amount of plastic waste permeating the air, water, and soil virtually everywhere on Earth.

“I think the most important result that we can share with the American public is that there’s more plastic out there than meets the eye,” said Weatherbee. “It’s in the rain, it’s in the snow. It’s a part of our environment now.”

Rainwater samples collected across Colorado and analyzed under a microscope contained a rainbow of plastic fibers, as well as beads and shards. The findings shocked Weatherbee, who had been collecting the samples in order to study nitrogen pollution.

The results are consistent with another recent study that found microplastics in the Pyrenees, suggesting plastic particles could travel with the wind for hundreds, if not thousands, of kilometers. Other studies have turned up microplastics in the deepest reaches of the ocean, in UK lakes and rivers and in US groundwater.

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