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  1. Planetary Science

    An ancient moonpocalypse may explain Neptune’s odd moon Nereid

    Neptune’s oddball moon Nereid may be the sole remnant of an earlier system, formed near the planet rather than being pulled in from afar.

    By Lisa Grossman
  2. Health & Medicine

    How to scout a safe summer swimming hole

    Best practices, including checking public E. coli reports and keeping your head above water can keep you safe while swimming.

    By Nikk Ogasa
  3. Oceans

    The outlook for a climate-regulating ocean current is…not good

    An ocean current called the Atlantic Meridional Overturning Circulation will weaken by 50 percent by 2100. The question is what to do about it.