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Newton’s 300-year-old law just passed its biggest test yet

A massive test of gravity across the cosmos found that it behaves almost exactly as Newton and Einstein predicted, even across galaxy clusters hundreds of millions of light-years apart. The result weakens some modified-gravity explanations and strengthens the case that dark matter is behind the universe’s mysterious missing mass.

We haven't written up this one. ScienceDaily has the full story — the link below goes straight to it.

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Process doubles the size of PFAS molecules, making them easy to destroy

Ask a chemist to name the strongest single bond in organic chemistry, and they'll likely say carbon-fluorine. It's that bond, repeated dozens of times over, that gives per- and polyfluoroalkyl substances (PFAS) their nickname: forever chemicals. Manufacturers prize PFAS for the same reason regulators dread them.

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