The secret world of puddles

As the new year arrived in 2016, my home city of Newcastle upon Tyne was briefly the center of global attention—for a puddle. The Drummond Puddle, as it was grandly known, was a watery hazard placed perfectly where converging ...

PFAS, PFAS everywhere: How pristine are laboratory materials?

How do you study the effects of exposure to per- and polyfluoroalkyl substances (PFAS), when it is in everything? To study the effect of a chemical, toxicologists typically expose animals to various doses of the chemical ...

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