The Supreme Court turned away an appeal by a group of gun-rights advocates seeking to overturn Maryland's ban on AR-15 semi-automatic rifles under the Second Amendment. ABC News’ Devin Dwyer ...

BC's Philip Landrigan, M.D., and the Minderoo-Monaco Commission on Plastics and Human Health present a sweeping new report showing plastic as a hazard at every stage of its life cycle Philip Landrigan ...

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