Earth

  1. Earth

    When trees grew in Antarctica

    Fossils of trees that grew in Antarctica millions of years ago suggest a growth pattern much different than modern trees.

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  2. Earth

    Earthquake history recorded in stalagmites

    Where stalagmites start and stop in caves could offer more precise clues about when major earthquakes have hit (and could again hit) the Midwest.

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  3. Earth

    A near-record Arctic melting

    This summer, the area covered by Arctic sea ice dropped to its second-lowest since satellite measurements began in 1979.

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  4. Earth

    Sea-level history off the ice

    For the first time, researchers have assembled a comprehensive record of how sea level varied between 542 million and 251 million years ago, more than doubling previous timelines for such fluctuations.

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  5. Chemistry

    Fluorescent bulbs offer mercury advantage

    Featured blog: Switching to light bulbs that contain mercury might, surprisingly, reduce overall mercury releases to the environment. Plus, what to do when you break your fluorescent bulb.

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  6. Earth

    Let’s Get Vertical

    City buildings offer opportunities for farms to grow up instead of out.

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  7. Earth

    Tough meteorite made a big impact

    The stony meteorite that landed in a remote portion of Peru in September 2007 was traveling abnormally fast when it struck and blasted a crater that was unusually large for the its size, new analyses indicate.

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  8. Earth

    New contender for Earth’s oldest rocks

    Observing rare isotopes in rocks along the Hudson Bay in Northern Quebec suggest the rocks have remained intact for 4.28 billion years, making them Earth's oldest.

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  9. Earth

    Continental clash cooled the climate

    The collision between India and Asia set off events that caused long-term cooling in Earth’s climate, new research suggests.

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  10. Climate

    (Political) party animals

    Featured blog: When it comes to attitudes about climate change, the chasm between Democrats and Republicans is wide. Political-polling analysts speculate that a McCain win in November might do more than an Obama victory to win over the minds of climate-change skeptics.

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  11. Climate

    Energy: Apollo-like Program Needed

    Big action and big bucks are needed to deal with the United States' energy problems, research leaders argued today.

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  12. Climate

    Heat waves stunt grassland growth

    An abnormally hot year can significantly suppress growth in grasslands, a stifling effect that lingers well into the next year even if temperatures return to normal. It can also hinder how well the grasslands absorb carbon dioxide from the atmosphere.

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