News

  1. Space

    Neutron tie-dye

    Neutrons can produce 3-D scans of a magnetic field, even inside a solid.

    By Davide Castelvecchi
  2. Health & Medicine

    Drugs: Still bad for you

    Heavy cannabis smokers have increased blood levels of a protein linked to heart disease.

    By Tia Ghose
  3. Health & Medicine

    Testing nanoparticles

    Testing the toxicity of dozens of nanoparticles en masse may offer a faster track to medical applications.

    By Davide Castelvecchi
  4. Health & Medicine

    Pollution and blood clots

    Inhaling tiny pollution particles, even at concentrations allowed in urban air, appears to increase the risk that an individual’s veins will develop potentially lethal blood clots.