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A secluded mountain region thought to be free of plastic pollution is in fact blanketed by airborne microplastics on a scale comparable to a major city such as Paris, alarmed researchers reported Monday.
Over a five-month period in 2017-2018, an average of 365 tiny bits of plastic settled every day on each square metre of an uninhabited, high-altitude area in the Pyrenees straddling France and Spain, they reported in the journal Nature Geoscience.
Particles - Pyrenees - Field - Site - Author
"It is astounding and worrying that so many particles were found in the Pyrenees field site," said lead author Steve Allen, a doctoral student at the University of Strathclyde in Scotland.
The study focused on microplastics mostly between 10 and 150 micrometres across, including fragments, fibres and sheet-like pieces of film.
Comparison - Hair - Average - Micrometres - Width
By comparison, a human hair is, on average, about 70 micrometres in width.
"We would never have anticipated that this study would reveal such high levels of microplastic deposits," added co-author Gael Le Roux, a researcher at EcoLab in Toulouse, in southwestern France.
Plastic - Litter - Years - Problem
Plastic litter has emerged in the last few years as a major environmental problem.
Up to 12 million tonnes of plastics are thought to enter the world's oceans every year, and millions more clog inland waterways and landfills.
Plastic - Decades - Environment
Plastic takes decades to break down, and even then continues to persist in the environment.
Scientists are only now beginning to measure the damage to wildlife and potential impacts on human health.
Study - Year - Fragments - Guts - Animals
A study earlier this year uncovered plastic fragments in the guts of animals living more than 10 kilometres below the ocean surface.
Two whales found beached since the start of the year—one in the Philippines, the other...
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