Search Results for: Geology

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7,845 results

7,845 results for: Geology

  1. Paleontology

    Northern Extinction: Alaskan horses shrank, then disappeared

    Horses that lived in Alaska shrank dramatically in body size before they went extinct at the end of the last ice age.

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  2. Earth

    Small quake shakes up hydrothermal vents

    Long-term, post-earthquake fluctuations in the temperature and volume of water spewing from hydrothermal vents off the coast of Washington state suggest that the fluid flow feeding such vents may be much more complex than previously thought.

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  3. Chemistry

    The Nature of Things

    An earth scientist's proposed alternative periodic table of elements is emblematic of the growing desire among scientists to recast this 130-year-old chart.

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  4. Planetary Science

    A New Flight Plan

    President Bush recently unveiled an ambitious plan for a manned mission to Mars, using the moon as a testing area and stepping-stone, but for many planetary scientists the moon is a desirable destination in and of itself.

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  5. Earth

    Thin Skin

    Desert pavement, a delicate veneer of stones that covers the surface of up to 50 percent of the world's arid lands, is susceptible to being damaged by everything from multi-ton tanks to careless footsteps, and the resulting scars can take thousands of years to mend on their own.

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  6. Earth

    Digging for Fire: Burning peat underlies Mali’s hot ground

    Superheated ground and smoking potholes in northern Mali are evidence not of volcanic activity but of a layer of peat that is burning 2 feet below the desert surface.

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  7. Earth

    Limiting Dead Zones

    To limit algal blooms and the development of fishless dead zones in coastal waters, farmers and other sources of nitrate are investigating novel strategies to control nitrate runoff.

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  8. Earth

    Frosty Florida: Spread of agriculture may promote freezes

    Planting crops in south Florida may have increased the risk of the freezes farmers hoped to avoid.

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  9. Paleontology

    Teeth tell tale of warm-blooded dinosaurs

    Evidence locked within the fossil teeth of some dinosaurs may help bolster the view that some of the animals were, at least to some degree, warm-blooded.

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  10. Earth

    Large lake floods scoured New Zealand

    A volcanic region of New Zealand’s North Island experienced immense floods and severe erosion when lakes filling the craters of dormant volcanoes burst through the craters' rims and poured down the slopes.

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  11. Earth

    Attack of the Rock-Eating Microbes!

    Geologists who examine mineral transformations increasingly see bacteria at work, leading the scientists to conclude that if microbes aren't driving the underlying chemical reactions, at least they're taking advantage of the energy that's released.

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  12. Earth

    Model offers grounds for midwestern quakes

    A new computer model may help explain how earthquakes can happen at fault zones located far from the edges of a tectonic plate.

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