Indiana University, EPA to study airborne PCBs
...evels. For example, PCB concentrations at the most urbanized study site, downtown Chicago (1,000 picograms per ...times higher than PCB levels at the decidedly less urbanized study site at Eagle Harbor on Michigan's Upper Peninsula (100 picograms per cubic meter of air). Air...Lecture on ecology of infectious diseases
...estern United States are becoming the most rapidly urbanized ecosystems in the country. Black-tailed prairie dogs, an imperiled species in western states, are increasingly found in these urban grasslands. In Boulder County, Colo., for example, nearly two-thirds of all prairie dog colonies are within a half-m...Water study yields a few surprises for New England
... (PCBs) were apparent in river sediments in highly urbanized areas, such as Boston, Mass. and Providence RI. All of these contaminants were detected at concentrations exceeding guidelines for the protection of aquatic life. Levels of organic compounds, such as the gasoline additive MTBE and solvents used in i...Ecological science for a crowded planet
...sources and problems associated with the growth of urbanized areas. Moreover, the group urged increased collaboration among ecologists, social scientists, policy-makers, and practitioners. Complementing the ESA's action plan is an article, "Ecology for a crowded planet" also prepared by the committee, which a...City rain run-off poses threat to coastal water users
...al Santa Cruz County, which is farther north, less urbanized and less polluted. "Surfers were selected as the study population because of their regular exposure to coastal waters," Baker says. In all, they interviewed 1,873 participants, asking about any illness symptoms they had experienced over the prev......area" (acreage based on 2000 Census Bureau list of urbanized areas) of Chicago, Ill., is equivalent to about 2,955 million gallons of water (or 2.96 billion gallons). The snowpack that accumulates each year in the mountains across the country are a vital part of the hydrologic cycle, according to USGS hydrol...Even more 'couch potatoes' in Brazil than in the United Statesbut theyre starting to move
...n recent decades as those nations have become more urbanized and more people work in jobs that require less physical effort. The gloomy situation for leisure-time physical activity in Brazil is showing some signs of turning around, nevertheless, according to a second piece in that same issue of the "Revista P...Urban black bears becoming couch potatoes, study says
...e to expand into wild areas, and as bears colonize urbanized regions, people must be educated to reduce potential conflicts. Local ordinances should be passed mandating bear-proof garbage containers for homes and businesses."Black bears and people can live side-by-side, as long as bears don't become dependent...The Fishing Hole Had Better Be Upstream From Commercial And Industrial Centers
...o you can get thousands per square meter in highly urbanized areas," McTammanysays. While pollution red.... "Algae,which can be a food source, grows well in urbanized systems in response torunoff from over-fertilized lawns and increased light and temperature from tre......if. -- A regional investigation of stream flow in urbanized areas could help planners, hydrologists and climat... people per square mile. This area is 100 percent urbanized and had an increase of 70 percent in stream flow. Rock Creek, Md., which had 648 people per square ...