1. Earth

    Seismic simulations help track tanks

    New computer models developed to analyze how seismic vibrations travel through uneven terrain can also be used to identify and track heavy vehicles such as tanks and trains.

  2. Earth

    Large earthquake would ravage Oregon

    A magnitude 8.5 earthquake off the coast of Oregon would devastate portions of the state, kill thousands of residents, and wrack the economy there for more than a decade.

  3. Earth

    Memory problems linked to PCBs in fish

    Adult exposures to polychlorinated biphenyls, from eating tainted fish, correlate with lower scores on learning and memorization tasks.

  4. Earth

    New test traces underground forest carbon

    An unusual method of studying soil respiration by girdling trees may clear up several vital mysteries in the way carbon cycles through forests.

  5. Earth

    Global Warming Debate Gets Hotter

    President Bush gets the global warming report he commissioned just days before he meets with European leaders.

  6. Earth

    Geologists take magnetic view through ice

    A new map of the magnetic anomalies in Antarctica and the seafloor surrounding the continent is giving researchers a fresh tool to use in analyzing geologic features that lie hidden beneath thousands of feet of ice or storm-tossed seas.

  7. Earth

    Allergic to computing?

  8. Earth

    Nations sign on to persistent-pollutants ban

    The United States joined 126 other nations in signing a treaty to ban or phase out a dozen persistent and toxic pollutants.

  9. Earth

    Salmon hatcheries can deplete wild stocks

    Hatchery fish appear to be replacing wild salmon populations in the Columbia River.

  10. Earth

    Daily Planet Earth

  11. Earth

    They’re not briquettes, but they’ll do

    Chunks of fossil charcoal found in ancient sediments in north central Pennsylvania suggest that cycles of wildfire plagued Earth more than 360 million years ago.

  12. Earth

    Lead Therapy Won’t Help Most Kids

    Removing lead from the blood fails to spare even moderately exposed children from cognitive impairments.