A new study shows that exposure to two specific 'forever chemicals' may accelerate biological aging, especially in middle-aged men. Researchers revealed a link between faster epigenetic aging, and two of these alternatives, PFNA and PFOSA, a precursor of PFOA.

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It’s also possible to abandon the threshold matrix altogether and instead calculate a value for every pixel coordinate at runtime. If the function is simple enough this can be a good and efficient way to break up patterns and create interesting textures.

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Part of a Soviet-era spacecraft is likely to have re-entered the Earth's atmosphere after being stuck in orbit for more than half a century, the European Space Agency said.

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