Catalytic converters fix one pollution problem, cause another
...rol devices reduce air pollution, increase ammonia emissions The same catalytic converters credited with re...ampling to measure the levels of ammonia and other emissions from more than 60,000 vehicles passing through a California highway tunnel over an eight-day period....International conference on heavy metals in the environment
...ity criteria. --Control strategies for heavy metal emissions and deposition. --Role of metals in chronic disease and aging. Papers on the following topics will also be presented: waste management, remediation of contaminated sites, urban and polar metal pollution, environmental data quality, heavy metals in d......the Rhine Basin between 1960-1980, when industrial emissions decreased significantly. Historical studies of he...e used for illustration of how spatial patterns of emissions and deposition have changed over time, and how heavy metals may accumulate in the soils posing a pot...Scientists look to nature to cut greenhouse emissions
Greenhouse gas emissions are an environmental concern and a costly problem ...ogy could process 20 percent of its carbon dioxide emissions and produce 200,000 tons or more of algae per year. The bioreactor is one of several energy techno...UW team to examine effects of change in southern Africa on air pollution
...he region not only has faced increased fossil-fuel emissions but also has experienced some of the most extensiv... the counterclockwise rotation, then study how the emissions are modified physically and chemically as they age and move farther from their sources. "It's the ag...Building better engines through natural selection
...e most important advance is in improving pollution emissions without sacrificing fuel efficiency, and vice vers...d a diesel engine design that reduces nitric oxide emissions by three-fold and soot emissions by 50 percent over the best available technology. At the same time,...Stanford study supports novel rainforest protection plan
...duce carbon dioxide (CO2) and other greenhouse gas emissions from power plants, factories and gasoline-burning ...ase. Unless there is a drastic reduction in CO2 emissions in the next 50 years, the Earth could undergo a catastrophic climate change, according to the United...Spring meeting press conferences
...atified or not, the new global awareness of carbon emissions and land use as an important issue may produce pol...ar value on carbon emissions, with trading between emissions in one place and land use changes in another may create a new "economy" based on carbon. Socioeconom......ies, dietary supplements, cellular phone radiation emissions and occupational chemicals. The Food and Drug Adm...vailable, as well as the radio frequency radiation emissions from cellular phones. Early studies of DNA-based products involved critically ill patients in ...Carbon diem: Grants awarded to research that seizes excess carbon dioxide
...o develop a mat of algae that will use power plant emissions of carbon dioxide for food. "Most biological processes for carbon sequestration use microorganisms in their planktonic state -- free cells," she said. "We are going to use a biofilm mat." Stoots will optimize how much carbon dioxide the mat of cells...Acid rain revisited: ESA releases report on the ecological response to acid deposition
...cid deposition through phased reductions of annual emissions of its precursors, sulfur dioxide (SO2) and nitrogen oxides (NOx). The scientists also wanted to ascertain whether ecosystems were experiencing any kind of recovery from previous acid deposition. The most important conclusions drawn from the worksho...Mountains of variables: The effect of landscape features on atmospheric deposition
...assive New York-New Jersey metropolitan area where emissions of both pollutants and nutrients are high. Although the Catskill Mountains are close to these metropolitan areas, some areas of these mountains have been largely undisturbed for the past 100 years. In addition, the Catskill region is of particular i......cancer has been noted in other investigations, but emissions from the TMI incident were significantly lower than in other documented studies," said Dr. Talbott. "Therefore, it is unlikely that this observed dose trend is related to radiation exposure on the day of the accident." To fully explore the relations...New research proves fullerene can be cosmic carbon carriers
...erent sources on Earth, like our atmosphere or the emissions from volcanoes, have a very different signature from the helium in a meteorite," Becker explains. "The helium we found within the fullerene cages of Australia's Murchison meteorite, for example, is similar to the helium that existed when our solar sy...Study points to U.S. as generator of greenhouse gases
...at the U.S. does not need to reduce greenhouse gas emissions because we're not part of the problem," said Ronal...on uptake in North America is balancing our carbon emissions from fossil fuels. We are still part of the problem."...Do US ecosystems balance US fossil fuel use?
... that North American ecosystem uptake balances its emissions of fossil fuel. The results suggest that when policies are made that requiring knowing ecosystem carbon uptake, policymakers must be aware that ecosystem carbon uptake can vary from year to year by large amounts. Therefore, short-term measurement p...Study: Methane cleans nitric oxide from power plant emissions
...e to remove toxic nitric oxide emissions from the stack gases of coal-burning power plants....ulty for reducing nitric oxide emissions with methane, Ozkan said. The researchers reported in Catalysis Today that havin...Scientist find clues to different warming rates
...and, to a lesserextent, the influx of Mt. Pinatubo emissions in the stratospherecooled the lower troposphere more than the surface. The model alsotook into account the buildup of greenhouse gases and sulfateaerosols. Says Wigley, "This is a very complex problem with large uncertaintiesin the effects of human a...Study shows industrial hog operations appear to impair health, life quality among neighbors
...n extend beyond the physiologic impact of airborne emissions to issues of well-water contamination and the negative impact of noxious odors on community economic development."...Road dust: Rural vehicles emit more pollutants than urban ones
...t is a measurement of the total particulate matter emissions a vehicle makes per mile traveled. While ppvm won...ory, has performed an ambitious study of vehicular emissions in the St. Louis region. Emission measurements were taken for particles smaller than 2.5 micrometer...