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  1. Health & Medicine

    One in three U.S. adults takes opioids, and many misuse them

    More than a third of U.S. adults used prescription opioids in 2015, and nearly 13 percent of that group misused the painkillers in some way.

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  2. Plants

    A new portrait of the world’s first flower is unveiled

    A reconstruction of the first flowers suggests the ancient blooms were bisexual.

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  3. Planetary Science

    Evidence mounts for an ocean on early Venus

    Not long after its birth, Venus may have rocked a water ocean, new simulations suggest.

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  4. Animals

    Newly discovered lymph hydraulics give tunas their fancy moves

    There’s still some anatomy to discover in fishes as familiar as bluefin and yellowfin tunas.