Uncategorized

  1. Earth

    Space station detectors found the source of weird ‘blue jet’ lightning

    The origins of an enigmatic type of lightning in the upper atmosphere has been traced to a 10-microsecond flash of bright blue light.

    By Maria Temming
  2. Archaeology

    The oldest known abrading tool was used around 350,000 years ago

    A flat-ended rock found in an Israeli cave marks an early technological shift by human ancestors to make stone tools for grinding rather than cutting.

    By Bruce Bower
  3. Physics

    Explore every gravitational wave event spotted so far

    This interactive visualization reveals the diversity of smashups that generate gravitational waves.

    By Emily Conover and Nadieh Bremer
  4. Science & Society

    Biden administration outlines its ambitious plan to tackle the COVID-19 pandemic

    Epidemiologist Michael Osterholm, an adviser to the Biden transition team, talks about the plans to tackle the public health crisis COVID-19 created.