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  1. Tech

    How Twitter bots get people to spread fake news

    Automated bot accounts on Twitter help spread misinformation by strategically encouraging people to make it go viral.

    By Maria Temming
  2. Archaeology

    An exploding meteor may have wiped out ancient Dead Sea communities

    An archaeological site not far from the Dead Sea shows signs of sudden, superheated collapse 3,700 years ago.

    By Bruce Bower
  3. Particle Physics

    Nuclear ‘knots’ could unravel the mysteries of atoms

    Skyrmions might help loosen scientific snarls in studies of atomic nuclei.

    By Emily Conover
  4. Planetary Science

    NASA’s Mars 2020 rover will look for ancient life in a former river delta

    NASA’s Mars 2020 rover is going to Jezero crater, the site of an ancient river delta that may harbor signs of life.