Earth

  1. Earth

    Bugs with gas

    Microbes living in sand under the sea may produce gases such as propane.

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  2. Climate

    Hot summers, wild fires

    Rising temperatures and earlier snowmelts in the western United States have intensified forest fires.

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  3. Oceans

    Surf watch

    Figuring out the waves and the wind is an important part of surfing.

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  4. Environment

    Pollution detective

    A science fair project tackles contaminated drinking water and mosquito growth.

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  5. Plants

    Pumping up poison ivy

    Boosting carbon dioxide levels makes poison ivy grow faster and become more toxic.

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  6. Animals

    Missing moose

    By studying population patterns, scientists hope to figure out why moose in some areas are in trouble.

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  7. Earth

    A great quake coming?

    The 100th anniversary of the great San Francisco earthquake is a reminder that future quakes could cause even more damage.

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  8. Earth

    Coral islands survive a tsunami

    Tiny islands far out in the ocean can weather the giant waves of a tsunami.

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  9. Environment

    Bald eagles forever

    The U.S. bald eagle population is on the rise.

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  10. Environment

    Coral gardens

    An expedition to an undersea mountain reveals large corals, brilliant sponges, and other strange sea creatures.

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  11. Climate

    Warmest year on record

    Last year's worldwide average temperature was the highest ever recorded by scientists.

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  12. Environment

    Plant gas

    Trees, grasses, and other plants may produce the greenhouse gas methane.

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