News

  1. Humans

    High costs of CT screening

    Whole-body computed tomography scans for asymptomatic disease do not appear cost-effective at this time.

    By Janet Raloff
  2. Earth

    Subway air does extra damage

    Airborne particles in subterranean transit stations may be more damaging to human cells than are particles from street-level air.

    By Ben Harder
  3. Planetary Science

    Meteorite on Mars

    One of the twin rovers on Mars has discovered the first meteorite ever found on a planet other than Earth.

    By Ron Cowen
  4. Humans

    Lean Times: Proposed budget keeps science spending slim

    After accounting for inflation, President Bush's proposed research-and-development budget for fiscal year 2006 is down 1.4