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Nanoplastics make up most of the plastic pollutants in the North Atlantic Ocean
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A landmark field study documented pervasive nanoplastic pollution throughout the North Atlantic Ocean, revealing that these invisible particles make up a large fraction of all plastic debris in open ocean waters. The findings raise urgent questions about what nanoscale plastics are doing to marine ecosystems and the seafood that humans ultimately consume.
A landmark field study reveals widespread pollution of the Atlantic Ocean by nanoscale plastic debris — raising questions about the risk to marine ecosystems. A landmark field study reveals widespread pollution of the Atlantic Ocean by nanoscale plastic debris — raising questions about the risk to marine ecosystems.
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Millions of tonnes of nanoplastics are polluting the ocean
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Researchers highlight that millions of tonnes of nanoplastics smaller than a human hair are polluting the ocean, with these particles capable of passing through cell walls and entering the marine food web with poorly understood consequences.
Nanoplastics are potentially more dangerous than microplastics
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Researchers argue that nanoplastics are likely more dangerous than microplastics because their smaller size allows them to penetrate living cells and travel to more remote locations in the body and environment, making them a more urgent concern for human health than their larger counterparts.
Far more microplastics floating in oceans than thought
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A new sampling method revealed that southern ocean microplastic concentrations are 37 times higher than previously estimated, suggesting that existing models have dramatically underestimated the scale of plastic pollution in Earth's most remote marine environments.
We estimate up to 14 million tonnes of microplastics lie on the seafloor. It’s worse than we thought
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Deep-sea sediment sampling estimates up to 14 million tonnes of microplastics have accumulated on the ocean floor, roughly 35 times the estimated weight of plastic floating on the ocean surface. This finding fundamentally changes the understanding of where plastic pollution resides and suggests the long-term ecological burden on marine ecosystems is far greater than surface measurements have indicated.
Nanoplastic concentrations across the North Atlantic
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Scientists measured nanoplastics (plastic particles smaller than a micrometer) across the entire North Atlantic Ocean for the first time. They found these tiny particles throughout the water column, with estimated amounts in the surface layer alone potentially reaching 27 million tonnes. This mass rivals or exceeds previous estimates for all larger plastics in the entire Atlantic, showing that nanoplastic pollution is far more extensive than previously thought.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.