News

  1. Earth

    Dioxin-type carcinogens pose additive risks

    Pollutants known as dioxins, furans, and certain chemically related polychlorinated biphenyls have additive cancer-causing effects when mixed together, as has been assumed in calculating the chemicals' health risks.

    By Ben Harder
  2. Astronomy

    Renegade stars in sun’s neighborhood

    Some stars in the neighborhood of the sun may be renegades from the center of our galaxy.

    By Ron Cowen
  3. Health & Medicine

    Childhood trauma raises risk of heart disease

    A childhood filled with psychological or physical tribulations contributes to one's risk of developing heart disease as an adult.

    By Ben Harder
  4. Astronomy

    Messy Findings: Planets encounter a violent world

    Some young planets continue to take a beating hundreds of millions of years after they've formed.