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Multicoloured microplastic rain falling in the Rocky Mountains




It’s raining multicolored plastic in the Rocky Mountains, according to the latest research that suggests microplastics are found in even the most remote parts of our planet.

Plastic shards, beads, and fibers were identified in more than 90% of rainwater samples taken from across Colorado, including at more than 3,000 metres high in Rocky Mountain National Park, according to researchers from the US Geological Survey.

According to the study, scientists say the find suggests “the wet deposition of plastic is ubiquitous and not just an urban condition.”

Lead US Geologic Survey researcher Gregory Weatherbee told The Guardian: “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. It’s in the rain, it’s in the snow. It’s a part of our environment now.”

Read more: A whale washed up dead in the Philippines with almost 100 pounds worth of trash in its stomach, including plastic shopping bags and rice sacks

Scientists — who were studying nitrogen pollution at the time — collected rainwater samples across Colorado and analyzed them using microscopes.

They believe rubbish dumped in the environment is the main source of microplastics and plastic fibers released from synthetic clothes is also a significant source.

In April, another group of researchers discovered substantial amounts of plastic waste on a remote catchment in the French Pyrenees mountains. They found 365 particles of microplastics in each square meter, according to the study published in Nature Geoscience.

Using atmospheric simulations, they found plastic waste was transported through the atmosphere from at least 100 kilometers away.

Read more: You might be consuming a credit card’s worth of plastic every week from your food

Microplastics have been described as a significant threat to marine life and have been found in rivers, oceans and Arctic regions.

In June, another study found British rivers are so polluted with waste almost all samples contain microplastics. The study of 13 UK rivers by Greenpeace revealed they all had microplastics in them.

More than four-fifths of the polymers found by Greenpeace were polyethylene, polystyrene and polypropylene, which are used to make products such as food packaging, milk and water bottles and carrier bags.

The growth in single-use consumer plastics has fueled a surge in plastic pollution around the world. It is estimated there are now 5.25 trillion pieces of ocean plastic debris, and a recent report estimated the quantity of plastic in the sea will treble by 2025.

Around 40% of plastics are thought to enter the waste stream in the same year they are produced.

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