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Infectious disease

FDA lays out COVID-19 vaccine requirements

Clinical trials must prove a vaccine can prevent infections

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Chemical Regulation

New US limit on lead dust not what the doctor ordered

The EPA strengthens regulations for lead paint cleanup but doesn’t use the latest science to protect children from lead poisoning

Dozens of methylene chloride uses pose health risks, US EPA says

Final risk assessment marks first step toward regulating the common solvent under the Toxic Substances Control Act

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Origins Of Life

Histones’ secret enzyme gig may have helped power eukaryote evolution

Proteins with a key role in DNA packaging moonlight as copper-reducing enzymes

FDA outlines criteria for COVID-19 vaccine approvals

Clinical trials must prove a vaccine can prevent infections