Uncategorized

  1. New dating finds oldest coral yet

    A sample of a black coral from a depth of 400 meters turns to be 4,200 years old.

    By Susan Milius
  2. Earth

    Dioxin’s long reach

    Breast development is delayed in teenage girls who were exposed to the organic pollutant dioxin in the womb and in their mothers' breast milk.

    By Rachel Ehrenberg
  3. Tech

    Diamond detectors

    The quantum states of single diamond impurities work as magnetic sensors that could enable nuclear magnetic resonance to detect single atoms.

    By Davide Castelvecchi
  4. Ecosystems

    Predators return

    Warming waters could push new predators into Antarctica's delicate ecosystems.

    By Ewen Callaway
  5. Agriculture

    Resistance to Bt crops emerges

    Resistance to pest-killing cotton crops is spreading among one species of caterpillar, but techniques to prevent the spread of resistance appear to be working for five other species.