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Pollution

UN plastics treaty trips at finish line

Talks falter as delegates butt heads over production caps and chemicals


EPA proposes to ban chlorpyrifos on most food

To comply with court ruling, plan would allow insecticide on 11 crops

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Infectious disease

Antiviral protects guinea pigs against lethal arenaviruses

Compound remained effective even when treatment was delayed


The indirect way fructose fuels tumor growth

Dietary sugar gets converted to lipids, which cancer cells use to make membranes

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Biocatalysis

Enzyme and photocatalyst juggle 3-component reaction

Researchers engineered an enzyme to wrangle multiple radicals with high stereoselectivity


Simple method converts fluorspar into fluorochemicals

Generating common fluorinating agents directly from the mineral avoids the dangers of hydrogen fluoride