Feature

  1. Earth

    Ocean View

    Ocean observatories have revealed unexpected discoveries, and now scientists want to widen the lens.

    By Carol Marzuola
  2. Earth

    Solving Hazy Mysteries

    Aerosols such as smoke, soot, and sea spray make for hazy vistas and stunning sunrises, but they also play major roles in Earth's climate and atmospheric chemistry.

    By Sid Perkins
  3. Animals

    Mad Deer Disease?

    Chronic wasting disease, once just an obscure brain ailment of deer and elk in a small patch of the West, is turning up in new places and raising troubling questions about risks.

    By Susan Milius
  4. Earth

    Taming Toxic Tides

    A growing international cadre of scientists is exploring a simple strategy for controlling toxic algal blooms: flinging dirt to sweep the algae from the water.