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A United Nations official said negotiators have a "clear path to landing an ambitious deal" on plastic pollution. But environmentalists say the plastic industry is undermining an effective agreement.
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A rise in breast cancer among younger women prompted the U.S. Preventive Task Force to issue new screening guidelines. They recommend mammograms every other year, starting at age 40.
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An economic perspective on misinformation
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A therapy that restores brain cells impaired by a rare genetic disorder may offer a strategy for treating conditions like autism, epilepsy, and schizophrenia.
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A new study shows people who are in the habit of climbing stairs are less likely to die from heart disease compared to those who don't. Stair climbers also had a slight boost in longevity.
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A trial for a mass environmental injury case begins in Hawaii on Monday, more than two years after a U.S. military facility poisoned thousands of people when it leaked jet fuel into drinking water.
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The federal government says it will restore grizzly bears to the North Cascades region in Washington state, where they have not been seen since 1996.
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A recent survey found that Americans' sleep patterns have been getting worse. Adult women under 50 are among the most sleep-deprived demographics.
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Health officials say there's very little risk to humans from the bird flu outbreak among dairy cattle, but there's still much they don't know. Here are four questions scientists are trying to answer.
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The Energy Department finalized rules that will ban fossil fuels in new and remodeled federal buildings by 2030.