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Pesticides

4 new pesticides ignite debate over PFAS definition

Environmental advocates claim the chemicals are PFAS, but the EPA says they are not


How air pollution can cause kidney disease

‘I will never forget that pain’

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Polymers

FDA approves light-activated polymer for nerve repair without stitches

Approval is the first for firm Tissium, which was founded over a decade ago


Tuberculosis succumbs to a new strategy

JNJ-6640 can kill the bacterium in mice by preventing it from making purines


Magnetic stirrers linked to issues with reproducing chemistry results

From the lab that found impurities on your stir bar—your flask’s placement on a stirrer plate can mess with your reaction too