Microplastics 'pollution puzzle' in PNAS News feature

In May, PNAS published an article that describes how research developed from finding unexpectedly high numbers of plastic particles in the marine environment to developing methods for identification and to effect assessment ...

'Safer' pesticide could create toxic mercury, study says

A compound in pesticides that replaced another banned for its harmful effects, may threaten humans and wildlife by reacting with mercury in natural water to form a toxic chemical, researchers said Tuesday.

A 'sponge' path to better catalysts and energy materials

Scientists from the U.S. Department of Energy (DOE) Office of Science's Oak Ridge (ORNL) and Argonne National Laboratories, Northwestern University, and Hokkaido University (Japan) have developed a new oxygen "sponge" that ...

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