A wake-up call for environmental health
...s Clear Skies Act 2003 aims to reduce power-plant emissions of sulphur dioxide, nitrogen oxides, and mercury, but ignores the role of carbon dioxide, concentrations of which have dramatically increased over the past century. The new chief of the US Environmental Protection Agency, Mike Leavitt, faces a tough ...Carnegie Mellon professor skeptical about use of hydrogen-fueled cars
... way to reduce automotive air pollution, or reduce emissions of climate-changing carbon dioxide gas, for at lea...larly, it is much cheaper to reduce carbon dioxide emissions from large stationary sources, such as power plants that burn coal, than it is to reduce such emissi...Mediterranean fishery recovers, thanks to manmade pollutants
...Nile also shows how quickly anthropogenic nutrient emissions can greatly exceed even those carried by one of the world's great rivers," continued Nixon. "The large number of coastal areas already manifesting serious effects of nutrient over-enrichment, including bottom water hypoxia or anoxia, undesirable alga...DuPont receives US EPA's Presidential Green Chemistry Award for new innovation
... To reduce global carbon-equivalent greenhouse gas emissions by 65 percent, using 1990 as a base year. The com...te Exchange have made a commitment to reduce their emissions of greenhouse gases by 4 percent below the average of their 1998-2001 baseline by 2006. The Presiden...Scientists say 'save our seas'
...rease in the Arctic, which may be due to increased emissions in Asia, where coal is burnt to provide electricity and heat. The report also outlines how previous environmental problems have been dealt with successfully and points to existing and potential areas that need attention. Dr. Frid, of Newcastle Un...Vehicle traffic associated with increased carcinogen levels
...Air & Waste Management Association. "Mobile source emissions present a unique public health threat," said Timot...chnologies or, best of all, the removal of traffic emissions from our neighborhoods through non-fossil fuel mass transit." Dr. Buckley and doctoral student Amir ...Engineering a solution to waste crisis
...ide depletion of soil quality; thirdly, it reduces emissions of methane the highly aggressive greenhouse gas produced by landfill disposal; and fourthly, it will help save peat beds which are threatened because of their use as a fertiliser." The composting project is one of many across several disciplines at...Association between increased risk of stillbirths and abnormalities with proximity to incinerators
...longed low dose exposure. But because of a lack of emissions data, no definitive conclusions can be drawn on the biological plausibility of the findings. The study does not provide conclusive evidence of a causal effect, but, nevertheless, the statistical findings bear further investigation, say the authors. T...New clues emerge about the fate of smog in Sierra Nevada forests
...erra Nevada Mountains. The ozone formed from those emissions is considered damaging to forest health - it leads to discoloration and loss of needles from pine trees, inhibits growth and potentially increases susceptibility to diseases. "In order to relate the dose of ozone to the damage, we need to do a bette...UCR scientists modify existing chemical scrubber to environmentally friendly, all-natural filter
...biologically removing hydrogen sulfide from sewage emissions a step further. Marc Deshusses, associate professor in the department of chemical and environmental engineering, and his postdoctoral researcher, David Gabriel, report in the Proceedings of the National Academy of Sciences (PNAS) that they have modi...Water quality in Adirondack lakes responding to acid rain regulations
... attribute to federal regulations that have curbed emissions of sulfur dioxide. But, while the situation may be...ch is then deposited in watersheds. Sulfur dioxide emissions have decreased dramatically since the 1970 Amendments to the Clean Air Act. Emissions peaked in 1973...50 Arctic lakes show dramatic effects of climate warming
...eriod of increased human industrial activities and emissions in more southern regions. Earlier PEARL studies in the High Arctic tundra had indicated major changes in the different layers of fossils associated with climate warming. The new findings bring the effects of climate change closer to populated areas. ...Study provides new insights into the functional neuroanatomy of motor imagery
...imagery has been extensively studied with positron emissions tomography (PET) and functional magnetic resonance imaging (fMRI) techniques. Converging evidence indicates that motor imagery shares neural substrates (substances changed by enzymes) with those underlying motor execution. However, less certain are h...Fire frequency determines forest carbon storage
... gas analyzers mounted on towers to monitor carbon emissions over five black spruce stands in Manitoba, Canada. These stands ranged in age from 11 to 130 years old. Results indicate that the ability to store carbon is almost zero in the 11 year-old stand, increases to a maximum in the 36 year-old stand, then g...MIT study: Hydrogen car no environmental panacea
...r) in terms of total energy use and greenhouse gas emissions by 2020, says a study recently released by MIT's L...d the same. The hydrogen fuel-cell vehicle has low emissions and energy use on the road--but converting a hydrocarbon fuel such as natural gas or gasoline into h...DuPont technology to receive US EPA's clean air excellence award
...cience behind DuPont TM SuperSolids TM ultra-low emissions coatings technology has earned the United States E... clearcoat lowers volatile organic compound (VOC) emissions more than 25 percent, while also improving scratch and mar resistance 60 percent for automotive fini...Rainforests at risk: Where theres smoke, theres even more fire
...ests rich biodiversity, can be eradicated. Carbon emissions skyrocket. Data is scarce, but Cochrane notes that...a may have equaled 41 percent of world fossil fuel emissions in 1998. The problem, Cochrane said, is that fire is so common in rainforests. People routinely use ...Can carbon sequestration solve global warming?
...Change has estimated that worldwide carbon dioxide emissions could more than triple over the next 100 years, from 7.4 billion tons of carbon per year in 1997 to approximately 20 billion tons per year by 2100. Lackner argued that large-scale carbon sequestration would allow the continued use of carbon-based fue...Meeting the nitrogen management challenge: Arresting the nitrogen cascade
...nsuitable for humans, livestock, and wildlife. Air emissions of nitrous oxide cause acidification of soil and water, or regional smog, and can reduce biodiversity on the affected land, impact agricultural and forestry production, and lead to health effects in humans and animals. "Given the critical need for n...Computer models forecast sharp increase in temperature if heat-trapping emissions continue to rise
...th business as usualif we dont do anything to curb emissions of greenhouse gasses, said Warren M. Washington, senior research scientist for the National Center for Atmospheric Research (NCAR) and a speaker at the AAAS Annual Meeting. Noting that concentrations of carbon dioxide and methane did not start to in...