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  1. Earth

    Improved three-week weather forecasts could save lives from disaster

    Meteorologists are pushing to make forecasts good enough to fill the gap between short-term and seasonal.

    By Alexandra Witze
  2. Science & Society

    Mandatory mail-in voting hurts neither Democratic nor Republican candidates

    A new study suggests that requiring people to cast mail-in ballots actually leads to a slightly increased turnout for both political parties.

    By Sujata Gupta
  3. Health & Medicine

    In a first, a person’s immune system fought HIV — and won

    Some rare people may purge most HIV from their bodies, leaving only broken copies of the virus or copies locked in molecular prisons, from which there is no escape.