Earth

  1. Environment

    Gulf oil finds many paths

    Questions, and lots of oil, remain months after Gulf disaster.

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  2. Environment

    The oily Gulf

    The Gulf oil spill is massive, will take years to clean up.

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  3. Life

    The algae invasion

    One of the world's simplest organisms is also one of the hardest to classify.

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  4. Climate

    Explainer: Global warming and the greenhouse effect

    Like the glass-walled greenhouses used to grow out-of-season plants, certain gases in Earth’s atmosphere trap the sun’s energy near the planet’s surface. This keeps Earth warm enough for life to flourish.

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  5. Environment

    Indoor ozone stopper

    Oils from human skin fight off this harmful chemical, but at a cost.

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  6. Environment

    When frog gender flips

    With weed killer in the water, some males acquire female traits.

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  7. Earth

    Earthquake shortens the day

    The recent South American quake sent Earth spinning just a big faster.

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  8. Earth

    Watering the air

    Crop irrigation and farming practices could mean a cooler, wetter Midwest.

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  9. Environment

    A global warming flap

    Differences in butterfly and moth breeding patterns are linked to a changing climate.

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  10. Environment

    Pollution at the ends of the Earth

    Chemicals are turning up in small Arctic villages far from factories and cities.

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  11. Environment

    Watching out for vultures

    Farmers giving medicine to cows are accidentally poisoning vultures, again.

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  12. Environment

    Deck the halls with DCA

    A plastic ornament was caught giving off poisonous vapors.

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