1. Earth

    Blood points to pollution’s heart risks

    As airborne concentrations of fine dust particles climb, so do three blood factors that increase an individual's heart attack risk.

  2. Earth

    Ozone flares with fireworks festivities

    Holiday fireworks and sparklers trigger ozone-generating chemical reactions in the lower atmosphere.

  3. Earth

    Alaska’s coastal permafrost is eroding

    Aerial photographs taken over the past 50 years show that Alaska's coastlines of permafrost aren't that permanent after all.

  4. Earth

    More acid rain in East Asia’s future

    Large increases in Asian industrial emissions of nitrogen oxides in the next 30 years could lead to a tripling of the acid rain there due to those pollutants.

  5. Earth

    Midlatitude bogs store carbon best

    Sediments in lakes and bogs along the eastern coast of the United States show that midlatitude bodies of water have sequestered higher amounts of carbon than others since the last ice age.

  6. 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.

  7. 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.

  8. 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.

  9. 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.

  10. Earth

    Global Warming Debate Gets Hotter

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

  11. 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.

  12. Earth

    Allergic to computing?

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