End Of World Population Growth Projected For 21st Century
...ikely scenario). "This is going to havesignificant impacts on societies and cause serious problems with pension systemsthroughout the world," says Lutz. Western Europe is likely to experience an increase in the proportionof those above age 60 from the current 18.6 percent to a very high 35 percent by2100....North America Hit Hard By Asteroid Strike In Yucatan 65 Million Years Ago
...u. "This finding may help us determine what other impacts did to Earthin the past and what they may do in the future," said Peter Schultz, professorof geological sciences at Brown University. Schultz and Steven D'Hondt,professor of oceanography at the University of Rhode Island, are co-authors ofthe study i......scientific and engineering communities about local impacts of trends in federal spending. Reports have been published on Alaska, California, Georgia, the Midwest, and the Pacific Northwest. The Association is the world's largest federation of scientists with more than 143,000 members and nearly 300 affilia...Hot 'Lanta: NASA, School Kids Team To Study How Trees Help Cities Keep Their Cool
...part of a larger study of past and future land use impacts on climate and air quality of Atlanta. In turn, it may help cities reshape themselves for comfort - and lower heating bills - and help developing nations avoi...New understanding of crab populations may not bring fishermen's delight
...em. More research is needed to identify the actual impacts of winds, currentsand El Nino conditions." Hastings says the next step is focusing on these explicit environmentalinfluences. Such demanding questions require complicated calculations, butrecent advances in computing power available should give the ...Banning Chemicals To Protect Ozone May Aggravate Global Warming
...ffect based on lesser-- or even inconsequential -- impacts on the other," said Don Wuebbles,director of the E...n more cautiousin rejecting chemicals with minimal impacts and offsetting benefits. "There are many other chemicals that also have special uses, smallimpacts,...Population Growth Costs Include Global Warming Impact
...leader in attempts to estimate the future economic impacts ofglobal warming. "We calculate three ways an ext... climate changeand greenhouse-gas emissions. "The impacts of climate change are estimated froma number of different studies, but it must be recognized that th...U.S. Scientists Honored For Lifetime Contributions In Hepatitis Research
... the general public on the positive impacts such research has on public health and the citizens of all countries." The King Faisal Foundation was established 20 years ago in honor of King Faisal ibn Abd Al Aziz. The ...Prairies Will Be Hit Hard By Global Warming
...lobal warming will have especially strong,negative impacts on prairie ecosystems in the near future with water shortagesbeing a problem right off the bat," says Professor Jay Malcolm of the Faculty ofForestry. Certain kinds of animals, particularly shore birds and waterfowl, areextremely sensitive to water l...Pennsylvania's R&D Climate Improving
...informscientific and engineering communities about impacts of federal spending trendson R&D at the state and regional levels. Reports have been published on Alaska,California, Florida, Georgia, the Midwest, New England, the Pacific Northwest,and the South Atlantic states. AAAS is the world's largest federat...Reclaimed Waste Water Can Augment Municipal Drinking-Water Supplies But Concerns Must Be Addressed
...ion. Municipalities first must fully assesshealth impacts from likely contaminants and develop comprehensive systems formonitoring, testing, and treatment. Other water sources and conservationmeasures also should be tried to the extent practical, before turning toreclaimed waste water. Because reg...Carbon In Boreal Forests: Temporary Or Permanent?
...is possibly related to climate change, while human impacts are stillnegligible in this region. The UN Framework Convention on Climate Change held in Kyoto in December 1997calls for a reduction in carbon emissions by the signatory, mostlyindustrialized nations. Besides emissions from fossil fuels, guideli......th Earthapproximately 214 million years ago. The impacts may have contributed to a mass extinction that occ...rnal Nature. “When scientists observed the impacts of the pieces of CometShoemaker-Levy 9 on Jupiter in July 1994, they said that the impact of afragme...UD Environmental News: Pfiesteria Detectors To Be Described March 18
...s have included, for example, an assessment of the impacts ofagricultural drainage on water quality in Delaware. RNA-BASED PFIESTERIA PROBES : Assistant Prof. Craig Cary and colleaguesin the College of Marine Studies are gearing up to develop new molecular toolsfor monitoring specific life stages of the ...USGS To Study Young Forests And Streamsides In Western Oregon
...inning for enhancingbiodiversity or for minimizing impacts to plants and animals; Study streamside or riparian areas, which are the transition zone betweenaquatic and upland habitats, to develop better methods for protecting thesecritical areas; and Study species of special concern, including amphibians,...Agriculture and urban activities impact water quality in the South Platte River Basin
...on as a rural drinking-water supply because of the impacts to ground-water quality from the intensive application of agricultural fertilizers and manure, accompanied by widespread irrigation," Dennehy said. "We found that nitrate concentrations exceeded the maximum contaminant level, or MCL, in about 48 per...Environmental Technology Breakthroughs Forecast -- Year 2008
...s and demos now, these technologies will have real impacts by2008." This is the first of an ongoing d...ing and plant manipulation will reduceagricultural impacts on the environment. Growing crops will require lesspesticide due to greater resistance to pests. O...USGS Says Central Columbia Plateau Water Quality Impaired by Agriculture, But Some Good News
...asin Irrigation Project (CBIP), showedthe greatest impacts on ground-water quality. (The CBIP includes parts ...icides since the mid-1980s. However, agricultural impacts on water quality go beyond the concerns for drinking water-the aquatic ecosystem of the plateau also...Scientists Find Further Global Warming Evidence In Temperature Reconstruction Study
...the fact is, we don't really knowwhat the regional impacts might be," said Mann. Researchers' studies of certain individual years were particularlyintriguing. For example, historical documents from 1791 suggested conditionsconsistent with a strong El Nino event that year; the reconstructed temperatu......Over the past decade, the report says, devastating impacts from invasive specieshave been reported on every continent except Antarctica. In the United States,introduced invasive plants comprise from 8 to 47 percent of the total flora ofmost states, a figure especially alarming considering a recent report fr...