Biogenic Emissions Higher Than Expected Over African Savanna
...inks of Oxidants. Because of biomass burning, smog levels over Africa often approach those of a high-pollution day in a major city, says Alex Guenther, a scientist at the National Center for Atmospheric Research (NCAR) in Boulder, Colorado. Scientists have gathered and analyzed data from previou...Guidelines For Next Generation Of Environmental Policy
... belchingindustrial smokestacks that produced city smog so thick drivers couldn't seethree stoplights ahead. The resulting flurry of grassroots activity in the 1970s brought aboutthe National Environmental Policy Act, the Clean Air Act, the Clean Water Act,the Toxic Substances Act, the Resource ...Even Moderate Air Pollution Reaching Eastern Wilderness Decreases Mountain Hikers' Lung Function
...ate levels of ozone --the main ingredient of urban smog -- can decrease active people's lung function,a study led by researchers at Brigham and Women's Hospital and the HarvardSchool of Public Health has found. The researchers said their two-year study showed ozone levels common tonon-urban part...... compounds in the aquatic environment Causes of smog & ozone in major world cities, such as Paris, Mexico City andJohannesburg The role of atmospheric chemistry in the global warming debate Beef flavor and fat composition: pasture-fed v. grain-fed cattle Community service as a chemistry degre...Smog Spreading To South Pacific
... March 31-- Once a stranger in paradise, migrating smog has begun topollute the skies over oceans in the s... travel across Africa and Australiato bring higher smog levels within range of remote locations in the southernoceans, such as Fiji. Tropospheric oz...Keep Off The Grass - Reduce Air Pollution
...rbons that can add significantly to photochemical smog problems," Mr Galbally says. "The blue haze you often see over the Dandenongs in Victoria and in New South Wales' Blue Mountains is caused in part by the gases released by vegetation." Wayne Kirstine from the Gippsland campus of Monash Universit...Fall Meeting: Preliminary Press Conference Schedule
... 1998 Central American fires, for example, boosted smog levels throughoutthe eastern United States. Results will also be presented on new capabilitiesto track active fires from satellites. The presenter is Dr. Sundar Christopherof the University of Alabama in Huntsville. TUESDAY, DECEMBER 8 10:00 AM: Io...Fall Meeting: Updated Press Conference Schedule
... 1998 Central American fires, for example, boosted smog levels throughout the eastern United States. Results will also be presented on new capabilities to track active fires from satellites. Presenter: Sundar Christopher, University of Alabama, Huntsville Panelists: Gregory R. Carmichael, Department of C...UF Researchers Show Common Compound Can Reduce Air Pollution
...ions, he said. For example, Los Angeles has such a smog problemthat officials have discussed restricting activities such as using agasoline-powered lawn mower and barbecuing outdoors. Coated alumina couldhold the key to new technologies that will reduce emissions from these andother small sources, he said...Particulate matter causing air pollution
...icles and industrialsources. It contributes to the smog so common in American cities. In the first of two "SuperSite" studies initiated by the U.S.Environmental Protection Agency (EPA), about 60 scientists from the GeorgiaInstitute of Technology and other institutions have converged at an Atlanta ...Air pollution hits children with asthma hardest, USC study finds
...to the latest findings of a ground-breaking10-year smog study by researchers at the Keck School of Medicine of theUniversity of Southern California, Division of Occupational and EnvironmentalHealth, and at other research organizations and the State of California AirResources Board. The Air Resources Boar...Scientists look for signs of pollution in the superhighway in the sky
...when the scientists looked for increased levels of smog chemistry coveringthe entire flight corridor, they...phere. The gasescan come from below, when man-made smog is funneled up during a thunderstorm.Ozone can meander down from the stratosphere where it acts as E...Explaining how ozone "chokes up" plants
...ate researchers have identified how ozone, a major smog constituent, affects the microscopic breathing por.... Because the generation of ozone in photochemical smog depends on high solar irradiation, ozone inhibition of stomatal opening could significantly retard s...Air pollution from Asia could violate new federal ozone standard
..., including hydrocarbons,carbon monoxide and a key smog ingredient called PAN (peroxyacetylnitrate), proved that the ozone-richair mass had not come from the upper atmosphere because those pollutants do not exist at highconcentrations in the upper atmosphere. At the AGU meeting in 1997, Jaffe presented c...UF research suggests widely used models may under predict pollution
...ed in part on studies of how gases combine to form smog in clean laboratory environments. Her research, se...ture research will examine a much broader array of smog constituents with the hope of improving the accuracy of the air quality models, Andino said. "The ne...Ozone found to have direct effect on genes linked with plants' aging
...has shown, for the first time, that ozone, a major smog constituent, has a direct effect on the genes associated with the aging process in plants. Dr. Jennifer Miller, who produced the finding as part of her doctoral thesis, says, "Plant scientists have long known that ozone accelerates the process ...Atmospheric aerosols impact on smog formation being reassessed
...ctions that form ozone, a significant component of smog that influences the concentrations of other air po... the effects of aerosol and ozone concentration on smog formation," says Vuilleumier. "As a result of this work, we have prepared a report to CARB reviewing...NASA satellite tracks hazardous smoke and smog partnership
...hy air. Researchers have discovered that smoke and smog move in different ways through the atmosphere. A s... Nino, which had alreadyincreased the thickness of smog over the region. At the sametime, additional smog from African fires streamed over theIndian Ocean a...Autumn foliage may affect air quality, climate
...omes from vegetation. A more effective wayto fight smog would be to curtail human-generated nitrogen oxideemissions. Ozone has attracted the attention of regulators because it aggravatesasthma and other respiratory ailments and weakens resistance toinfections. It also damages plants, causing an estimated ...Ozone produced by antibodies during bacterial killing and in inflammation
...he highly reactive gas is a hazardous component of smog in the summer months. Never before has ozone been detected in biology. "All our analytical data point to this oxidant possessing the chemical signature of ozone," says Wentworth, "in which case, this is a new molecule in biology and therefore may h...