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  1. Health & Medicine

    An experimental HIV vaccine failed a key trial in South Africa

    A vaccine against the human immunodeficiency virus tested in South Africa did not reduce the risk of infection with the virus.

    By Aimee Cunningham
  2. Health & Medicine

    SARS and the new coronavirus target the same cellular lock to infect cells

    Experiments with living cells grown in the lab show that 2019-nCoV enters cells the same way as SARS.

    By Erin Garcia de Jesús
  3. Materials Science

    The containers the U.S. plans to use for nuclear waste storage may corrode

    The different components of a nuclear waste storage unit start to corrode each other when wet, new lab experiments show.