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Sunscreen may impact tiny ocean denizens

from Science World Report

It turns out that sunscreen could be hurting our environment. Scientists have found that when certain sunblock ingredients wash off our skin and into the sea, they can become toxic to some of the ocean's tiniest denizens, which are the basis of the food chain for many other marine animals. The main problems lie in titanium dioxide and zinc oxide nanoparticles. These are common ingredients in sunblock, and can react with ultraviolet light from the sun and form new compounds, such as hydrogen peroxide. High amounts of hydrogen peroxide can harm phytoplankton, which are the microscopic algae that feed everything from small fish to shrimp to whales. more

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