News

  1. Planetary Science

    Opportunity rolls out of Purgatory

    After being stuck for nearly 5 weeks, the Mars rover Opportunity has freed itself from a sand trap on the Red Planet.

    By Ron Cowen
  2. Materials Science

    Whisking Whiskers: Nanobrushes sweep up

    Researchers have made microscopic brushes with carbon nanotube bristles.

    By Peter Weiss
  3. Earth

    Wetland Blanket: Volcanic sulfates may curb methane emission

    Field studies hint that the deposition on wetlands of sulfate compounds from the atmosphere could temporarily stifle those regions' natural emissions of methane.

    By Sid Perkins
  4. Humans

    Using one’s head

    Porters in Nepal turn out to be the most efficient human load carriers yet recorded, carrying burdens that average 93 percent of their body weight.