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Science Feeds |
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NASA's Earth Observatory
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Your source for monitoring regional and global changes on our planet through images and stories.
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Reference: William Smith (1769-1839)
William Smith discovered that he could identify rock layers by the unique fossils they held. His discovery helped later generations of scientists to understand the history of life on Earth.
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News: NASA Satellite Captures Image of Cyclone Nargis Flooding in Burma (Myanmar)
NASA's Terra satellite captured images of Burma (Myanmar) showing the devastation of flooding from Cyclone Nargis.
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News: Scientists Discover New Ocean Current
Scientists have discovered a new climate pattern, the North Pacific Gyre Oscillation which explains changes in the water important in helping commercial fishermen understand fluctuations in the fish stock. (Georgia Institute of Technology press release)
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News: Researchers Forecast 59 Percent Chance of Record Low Arctic Sea Ice in 2008
New calculations indicate the record low minimum extent of sea ice across the Arctic last September has a three-in-five chance of being shattered again in 2008 because of continued warming temperatures and a preponderance of younger, thinner ice. (University of Colorado at Boulder press release)
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News: Before Fossil Fuels, Earth's Minerals Kept CO2 in Check
Over millions of years carbon dioxide levels in the atmosphere have been moderated by a finely-tuned natural feedback system ? a system that human emissions have recently overwhelmed. (Carnegie Institution press release)
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News: 'Broken Heart' Image the Last for NASA's Long-Lived Polar Mission
NASA's Polar satellite concludes its successful mission at the end of April with a breathtaking visible light image of the colorful dancing lights of the aurora.
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News: Northern Lights Glimmer with Unexpected Trait
Some light in Earth's aurora glow is polarized ? a state not thought possible for the aurora, according to new observations that may improve understanding of Earth's upper atmosphere, its magnetic field, and the energies of particles from the sun. (American Geophysical Union press release)
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News: Ozone Hole Recovery May Reshape Southern Hemisphere Climate Change
A full recovery of the stratospheric ozone hole could modify climate change in the southern hemisphere and even amplify Antarctic warming, according to scientists. (University of Colorado at Boulder press release)
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News: Better Regional Monitoring of CO2 Needed as Global Levels Continue Rising
Monitoring Earth's rising greenhouse gas levels will require a global data collection network 10 times larger than the one currently in place in order to quantify regional progress in emission reductions, scientists say. (University of Colorado at Boulder press release)
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News: Stratospheric Injections to Counter Global Warming Could Damage Ozone Layer
A much-discussed idea to offset global warming by injecting sulfates into the stratosphere would drastically affect the ozone layer. (NCAR/UCAR press release)
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News: Sierra Nevada Rose to Current Height Earlier Than Thought
Scientists have found that the central Sierra Nevada largely attained its present elevation 12 million years ago, roughly 8 or 9 million years earlier than commonly thought. (Stanford University press release)
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Natural Hazards: Dust over the Persian Gulf
Thick dust hovered over the northern tip of the Persian Gulf in early May 2008.
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Natural Hazards: Chaiten Volcano Erupts
Dormant for more than 9,000 years, the Chaiten Volcano in southern Chile began to erupt on May 2, 2008, forcing thousands of residents from their homes. On May 6, the volcano's activity intensified, sending a plume 30 kilometers skyward.
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Natural Hazards: Cyclone Nargis Floods Burma (Myanmar)
The first cyclone of the season in the northern Indian Ocean was a devastating one for Burma (Myanmar). At least 20,000 people were killed, and thousands more were missing as of May 9,2008.
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Natural Hazards: Dust Storm in the Taklimakan Desert
Dust storms covered much of the Taklimakan Desert in western China in early May 2008.
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