Sid Perkins

Sid Perkins is a freelance science writer based in Crossville, Tenn.

All Stories by Sid Perkins

  1. Earth

    Greenland’s ice is thinner at the margins

    The central portion of Greenland's ice sheet is, on the whole, not getting any thinner, but most margins of the ice sheet are thinning substantially and contributing to rising sea levels.

  2. Earth

    An Ounce of Prevention

    Fresh approaches may cut back greenhouse-gas emissions.

  3. Paleontology

    Was it sudden death for the Permian period?

    The massive extinctions that came at the end of the Permian period could have occurred within a mere 8,000 years, which suggests a catastrophic cause for the die-offs.

  4. Earth

    Enjoy the beach. . .while it’s still there

    Up to a quarter of the structures within 500 feet of America's coastlines may be lost to erosion in the next 60 years, according to a report issued by the Federal Emergency Management Agency last week.

  5. Tech

    Eau, Brother!

    The combination of advanced sensor materials and powerful computer chips promises devices that can sense threats ranging from bacteria in food to explosives in land mines.

  6. Tech

    Building a Supermodel

    Researchers are combining ergonomics and biological research with computer power to build a virtual human that can simulate human biology from anatomy down to the genetic code.