News

  1. Earth

    Count Down: Chemicals linked to inferior sperm

    New data suggest that typical exposures to chemicals called phthalates are associated with reduced fertility in men, but the specific phthalates they finger aren't those that researchers most expected to cause problems.

    By Ben Harder
  2. Humans

    Test Flight: Young scientists earn—and spread—their wings

    A century after two brothers from Ohio launched the first powered aircraft, more than 1,200 students from 31 countries descended on Cleveland to participate in the Intel International Science and Engineering Fair.

    By Ben Harder
  3. Chemistry

    Detecting Lead: Sensor changes color for toxic metal

    A new sensor using gold nanoparticles and tailor-made DNA strands offers simple and reliable detection of lead in paint.