News

  1. Space

    Salty water might exist on Mars, but it’s probably too cold for life

    Salty liquids may last for several hours on the Red Planet but be too chilly for any known microorganisms from Earth to survive, simulations suggest.

    By Christopher Crockett
  2. Health & Medicine

    A multiple sclerosis drug may speed COVID-19 recovery

    One form of interferon may boost the immune system’s ability to fight the coronavirus early in infections, a small study suggests.

    By Tina Hesman Saey
  3. Health & Medicine

    Door-to-door tests help track COVID-19’s spread in one Oregon town

    Surveying neighborhoods directly may give a more accurate view than mail-in tests and other methods, researchers say.