News

  1. Earth

    Brazil’s Amazon has burned this badly before. This year’s fires are still bad

    An environmental scientist discusses possible impacts from the thousands of fires burning across the Brazilian Amazon rainforest.

    By Gloria Dickie
  2. Health & Medicine

    Marijuana and meth are getting more popular in America, but cocaine has declined

    In 2006, drug users spent more on cocaine than on heroin, marijuana or methamphetamine. By 2016, marijuana expenditures had exceeded the other drugs.

    By Carolyn Wilke
  3. Space

    For an asteroid, Ryugu has surprisingly little dust on its surface

    Ryugu lacks the dust that some other space rocks have. The near-Earth asteroid may hide the fine debris inside porous rocks or eject it into space.