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Boulder - Sep 19, 2003Three "Doppler on Wheels" (DOW) mobile radars developed partly at the National Center for Atmospheric Research (NCAR) are heading toward the mid-Atlantic coast to intercept the eye of Hurricane Isabel as the powerful storm hits land. Ancient Relatives of Algae Played Key Role Early CO2 Rich Atmosphere 
Washington - Sep 19, 2003Billions of years ago, there was a lot more greenhouse gas than today, and that was a good thing � else the Earth might be an icy ball. How much greenhouse gas was there in the ancient atmosphere? A 1993 model by Jim Kasting of Pennsylvania State University estimates that carbon dioxide (CO2) levels in the Earth's early atmosphere must have been 10 times to as much as 10,000 times today's level, in order to compensate for the young (and fainter) sun. |
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Ocean Plant Life Slows Down And Absorbs Less Carbon
Greenbelt - Sep 18, 2003Plant life in the world's oceans has become less productive since the early 1980s, absorbing less carbon, which may in turn impact the Earth's carbon cycle, according to a study that combines NASA satellite data with NOAA surface observations of marine plants. Tens Of Thousands Flee As US Braces For Hurricane Isabela Kitty Hawk, North Carolina (AFP) Sep 17, 2003  Tens of thousands of people fled their homes on the US East Coast on Tuesday and dozens of navy vessels were ordered out to sea to avoid a collision with Hurricane Isabel. Isabel eased slighty but was still packing winds of 170 kilometers an hour as it headed for an expected landfall early Thursday, according to the US National Hurricane Center.The Fate Of Toxic Pollutants Harbored In Arctic Waters 
New York - Sep 12, 2003An analysis of pesticides that accumulate in Arctic waterways is giving scientists insight into the fate of such pollutants once they settle in polar regions. Did Earth Blow Up The Dinosaurs 
Cardiff - Sep 11, 2003New evidence supports volcanic eruption theory The extinction of the dinosaurs � thought to be caused by an asteroid impact some 65 million years ago � was more likely to have been caused by a 'mantle plume' � a huge volcanic eruption from deep within the earth's mantle, the region between the crust and the core of the earth. NASA Releases Near-Earth Object Search Report 
Pasadena - Sep 11, 2003NASA has released a technical report on potential future search efforts for near-Earth objects after a year of analysis by scientists working on this issue. This Science Definition Team was chartered to study what should be done to find near-Earth objects less than 1 kilometer in size. MIT Reassess Asteroid Hazards 
Monterey - Sep 11, 2003Of the approximately 1,000 near-Earth asteroids larger than 1 kilometer in diameter, one strikes the Earth on average once every 600,000 years, MIT Lincoln Laboratory researcher J. Scott Stuart reported today (Sept. 5) at the 35th annual meeting of the American Astronomical Society Division for Planetary Sciences. Undergrads Ready For Launch 
Wallops Island - Sep 10, 2003After two years of planning and preparation, undergraduate students from the University of Virginia, Charlottesville, are ready for the launch of their experiments aboard a NASA rocket in the early morning on Sept 16. |
Ocean May Sponge Up Some Warmth Over Next 50 Years
Greenbelt - Sep 04, 2003NASA's improved global climate computer model, which simulates and projects how the Earth's climate may change, indicates that the oceans have been absorbing heat since 1951 and will continue to absorb more heat from the atmosphere over the next 50 years. Asteroid 2003 QQ47's Potential Earth Impact in 2014 Ruled Out
Pasadena - Sep 03, 2003Newly discovered asteroid 2003 QQ47 has received considerable media attention over the last few days because it had a small chance of colliding with the Earth in the year 2014 and was rated a "1" on the Torino impact hazard scale, which goes from 0 to 10. Americans Most Misinformed About Global Warming 
Champaign - Sep 03, 2003Despite huge differences in all kinds of resources, citizens of poorer developing countries have essentially the same level of knowledge about the sources of global warming as citizens of richer developed countries -- and that level isn't very high. As Sea Level Rises, Beaches Shrink 
Pasadena - Sep 01, 2003Stack two dimes on top of each other. Their height is a tiny fraction less than global sea level is rising each year. The increase looks small, but the consequences are potentially huge. Rising sea level threatens to inundate low-lying regions, such as the Chesapeake, and dramatically increase coastal and beach erosion around the world. Modern Global Warming More Damaging Than In The Past 
Ann Arbor - Sep 01, 2003Global warming isn't what it used to be. "Some people will tell you that the planet has warmed in the past and that species always managed to adapt, so there's no cause for alarm. Unfortunately that's not the case," said Johannes Foufopoulos, assistant professor at the University of Michigan School of Natural Resources and Environment. Weather Extremes Shed Light On Prairie's Past Future 
Champaign - Sep 01, 2003Highway travelers view much of the Midwest as little more than barren flatlands. The formation of the region and its rich soils, especially tall grass areas that seemingly should support diverse forests, however, have long fascinated scientists. Methane Thought To Be Responsible For Mass Extinction 
Evanston - Sep 01, 2003What caused the worst mass extinction in Earth's history 251 million years ago? An asteroid or comet colliding with Earth? A greenhouse effect? Volcanic eruptions in Siberia? Or an entirely different culprit? A Northwestern University chemical engineer believes the culprit may be an enormous explosion of methane (natural gas) erupting from the ocean depths. |
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