microplastics

Chewing gum can shed microplastics into saliva, pilot study finds

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via Eurekalert

SAN DIEGO, March 25, 2025 — Plastic is everywhere. And many products we use in everyday life, such as cutting boards, clothes and cleaning sponges, can expose people to tiny, micrometer-wide plastic particles called microplastics. Now, chewing gum could be added to the list. In a pilot study, researchers found that chewing gum can release hundreds to thousands of microplastics per piece into saliva and potentially be ingested.

The researchers will present their results at the spring meeting of the American Chemical Society (ACS). ACS Spring 2025 is being held March 23-27; it features about 12,000 presentations on a range of science topics.

Read the full story here: https://www.eurekalert.org/news-releases/1076910

The Microplastic Crisis Is Getting Exponentially Worse

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The Microplastic Crisis Is Getting Exponentially Worse

via Wired

plastic scrapNot even the Arctic Ocean is immune to the incessant growth of microplastic pollution. In a new study that analyzed sediment core samples, researchers quantified how many of the particles have been deposited since the early 1930s. As scientists have shown elsewhere, the team found that microplastic contamination in the Arctic has been growing exponentially and in lockstep with the growth of plastic production—which is now up to a trillion pounds a year, with the global amount of plastic waste projected to triple by 2060.

Read the full story here: https://www.wired.com/story/the-microplastic-crisis-is-getting-exponentially-worse/

Scientists find microplastics in blood for first time

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Scientists find microplastics in blood for first time

via Phys.org

Microplastic sperules in tooth paste, about 30 µm in diameter. Credit: Dantor (talk) 20:55, 18 November 2013 (UTC), CC BY-SA 3.0 via Wikimedia Commons

Scientists have discovered microplastics in human blood for the first time, warning that the ubiquitous particles could also be making their way into organs.

The tiny pieces of mostly invisible plastic have already been found almost everywhere else on Earth, from the deepest oceans to the highest mountains as well as in the air, soil and food chain.

Read the full story here: https://phys.org/news/2022-03-scientists-microplastics-blood.html

Researchers find how tiny plastics slip through the environment

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via Eurekalert

Washington State University researchers have shown the fundamental mechanisms that allow tiny pieces of plastic bags and foam packaging at the nanoscale to move through the environment.

The researchers found that a silica surface such as sand has little effect on slowing down the movement of the plastics, but that natural organic matter resulting from decomposition of plant and animal remains can either temporarily or permanently trap the nanoscale plastic particles, depending on the type of plastics.

Read the full story here: here: https://www.eurekalert.org/pub_releases/2021-04/wsu-rfh042721.php

Airborne plastic pollution ‘spiralling around the globe’, study finds

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via The Guardian

Microplastic pollution is now “spiralling around the globe”, according to a study of airborne plastic particles.

The researchers said human pollution has led to a global plastic cycle, akin to natural processes such as the carbon cycle, with plastic moving through the atmosphere, oceans and land. The result is the “plastification” of the planet, said one scientist.

Read the full story here: https://www.theguardian.com/environment/2021/apr/12/airborne-plastic-pollution-spiralling-around-the-globe-study-finds

Plastic Is Falling From the Sky. But Where’s It Coming From?

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via Wired

At any given time, 1,100 tons of microplastic are floating over the western US. New modeling shows the surprising sources of the nefarious pollutant.

IF YOU FIND yourself in some secluded spot in the American West—maybe Yellowstone, or the deserts of Utah, or the forests of Oregon—take a deep breath and get some fresh air along with some microplastic. According to new modeling, 1,100 tons of it is currently floating above the western US. The stuff is falling out of the sky, tainting the most remote corners of North America—and the world. As I’ve said before, plastic rain is the new acid rain.

But where is it all coming from? You’d think it’d be arising from nearby cities—western metropolises like Denver and Salt Lake City. But new modeling published yesterday in the Proceedings of the National Academy of Sciences shows that 84 percent of airborne microplastics in the American West actually comes from the roads outside of major cities. Another 11 percent could be blowing all the way in from the ocean. (The researchers who built the model reckon that microplastic particles stay airborne for nearly a week, and that’s more than enough time for them to cross continents and oceans.)

Read the full story here: https://www.wired.com/story/plastic-is-falling-from-the-sky/

Seagrass ‘Neptune balls’ bundle plastic waste

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via Phys.Org

Underwater seagrass in coastal areas appear to trap bits of plastic in natural bundles of fibre known as “Neptune balls,” researchers said Thursday.

With no help from humans, the swaying plants—anchored to shallow seabeds—may collect nearly 900 million plastic items in the Mediterranean alone every year, they reported in the journal Scientific Reports.

read the full story here: https://phys.org/news/2021-01-seagrass-meadows-marine-plastic-sea.html

E-cigarettes highlight the challenges of dealing with plastic waste

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Via ABC News

E-cigarettes and vapes have made the headlines amid national concerns about nicotine addiction among young people and health problems linked to black-market products. But among environmental advocates the increasingly popular products pose another challenge — how to get rid of them after they’re used.

E-cigarettes and pods for e-cigarettes or vapes can be both hazardous and electronic waste — depending on the product — and the plastic poses the same concerns as other plastic products that can add to overall waste and break down into microplastics that harm ocean ecosystems.

Read the full story here: https://abcnews.go.com/Politics/cigarettes-highlight-challenges-dealing-plastic-waste/story?id=68890487

It’s raining plastic: microscopic fibers fall from the sky in Rocky Mountains

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via The Guardian

Plastic was the furthest thing from Gregory Wetherbee’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.

Read the full story here: https://www.theguardian.com/us-news/2019/aug/12/raining-plastic-colorado-usgs-microplastics