SMRTR Science & EngineeringJul 10, 2025Scientific American

Nanoplastics Make Up Most of the Ocean’s Plastic Pollution

SMRTR summary

Researchers discovered massive amounts of nanoplastics in the North Atlantic Ocean, with an estimated 27 million metric tons in just the top layer. These tiny particles, smaller than microplastics, can pass through cell walls and enter the food web, potentially posing significant risks to marine life and ecosystems. The study highlights the need for urgent action to address plastic pollution, including possible limits on plastic production.

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