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Greenbelt - Oct 02, 2003NASA satellites have observed the calving, or breaking off, of one of the largest icebergs ever recorded. Named "C-19" - the iceberg separated from the western face of the Ross Ice Shelf in Antarctica in May 2002, splashed into the Ross Sea, and virtually eliminated a valuable food source for marine life. The event was unusual, because it was the second-largest iceberg to calve in the region in 26 months. Geneticist Spells Out Consequences of Genetically Engineered Genes Escaping |
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Can Only Drugs Save The Rainforests
Salt Lake City - Oct 01, 2003Misty-eyed idealism alone will not save Earth's dwindling tropical rainforests. But a five-year, $3 million study in Panama indicates rainforests can be protected if the pharmaceutical industry establishes Third World laboratories and hires local researchers to look for new medicines extracted from plants that evolved defenses against insects. Early Arctic Thaw May And The Carbon Balance 
Pasadema (JPL) Sep 30, 2003Spring will be coming early next year to the great forests and tundra of the Arctic. Good for the vegetation, but perhaps not so good for the atmosphere. Spring in the high latitudes has been coming earlier in the past few decades. The early thaw means a longer growing season for the Arctic and the boreal forest, the ring of mostly evergreen trees that stretches across the northern reaches of North America and Eurasia. It also means that more carbon, now stored in the region's usually frozen soils, may be released into the air. NASA Selects Two Magnetospheric Mission Proposals For Feasibility Studies 
Greenbelt - Sep 29, 2003In the first step of a two-step process, NASA has selected two teams to conduct concept studies for the Magnetospheric Multiscale (MMS) Mission, the fourth investigation in NASA's Solar Terrestrial Probe mission line. Ecosystem Changes In Polar Regions Linked To Solar Variability 
Livermore - Sep 29, 2003A Lawrence Livermore National Laboratory scientist, in collaboration with an international team of colleagues, has reported that noticeable changes in the sub-polar climate and ecosystems appear to be linked to variations in the sun's intensity during the past 12,000 years. Paleontologist Offers New Theory On Dinosaur Extinction 
Princeton - Sep 26, 2003As a paleontologist, Gerta Keller has studied many aspects of the history of life on Earth. But the question capturing her attention lately is one so basic it has passed the lips of generations of 6-year-olds: What killed the dinosaurs? Ozone Hole Peak Approaches, But Falls Short Of Record 
Greenbelt - Sep 26, 2003This year's Antarctic ozone hole is the second largest ever observed, according to scientists from NASA, the National Oceanic and Atmospheric Administration (NOAA), and the Naval Research Laboratory. Northern Climate, Ecosystems Driven By Cycles Of Changing Sunlight 
Champaign - Sep 26, 2003Emerging geochemical and biological evidence from Alaskan lake sediment suggests that slight variations in the sun's intensity have affected sub-polar climate and ecosystems in a predictable fashion during the last 12,000 years. |
Largest Arctic Ice Shelf Breaks Up, Draining Freshwater Lake
Quebec City - Sep 24, 2003The largest ice shelf in the Arctic has broken, and scientists who have studied it closely say it is evidence of ongoing and accelerated climate change in the north polar region. The Ward Hunt Ice Shelf is located on the north coast of Ellesmere Island in Canada's Nunavut territory and its northernmost national park. This ancient feature of thick ice floating on the sea began forming some 4,500 years ago and has been in place for at least 3,000 years. Opening A File Card On All Lifeforms 
Arlington - Sep 24, 2003The National Science Foundation (NSF), in cooperation with the ALL Species Foundation, has announced an important new strategy to discover, describe and classify Earth's species. By some estimates as many as 90 percent of living species are unknown to science, and traditional approaches to discover them are unacceptably slow, scientists say. Human Biology At The Level Of Whole Systems 
Boston - Sep 24, 2003Harvard Medical School today makes a significant commitment to the emerging field of systems biology in announcing the creation of the Department of Systems Biology (DSB), one of the first department-level systems biology programs in the nation. Systems Biology seeks to build from our current knowledge of genetic and molecular function to an understanding of how a whole cell works as a system and from there to multi-cellular systems such as organs and whole animals. Doppler On Wheels To Intercept Eye Of Hurricane Isabel 
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. 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. |
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