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Food-Crop Yields In Future Greenhouse-Gas Conditions Lower Than Expected
July 31, 2006 — Open-air field trials involving five major food crops grown under carbon-dioxide levels projected for the future are harvesting dramatically less bounty than those raised in earlier greenhouse and ... > full story -
Scientists Find Antarctic Ozone Hole To Recover Later Than Expected
June 30, 2006 — Scientists from NASA and other agencies have concluded that the ozone hole over the Antarctic will recover around 2068, nearly 20 years later than previously ... > full story -
Scientists Find Chlorine May Contribute To Ozone Formation
June 14, 2006 — Standard methods of predicting air pollution don't take atmospheric chlorine into account, but the chemical could be responsible for 10 percent or more of daily ozone production in local air, ... > full story -
Earth's Ozone Layer Appears To Be On The Road To Recovery
May 27, 2006 — While the ozone hole over Antarctica continues to open wide, the ozone layer around the rest of the planet seems to be on the mend. For the last 9 years, worldwide ozone has remained roughly ... > full story -
Many Cleaners, Air Fresheners May Pose Health Risks When Used Indoors
May 24, 2006 — A new study from UC Berkeley and Lawrence Berkeley National Laboratory finds that many common household cleaners and air fresheners, when used indoors under certain conditions, emit toxic pollutants ... > full story -
Record Air Pollution Above The Arctic
May 12, 2006 — Scientists of the Alfred Wegener Institute for Polar and Marine Research have observed the highest air pollution on record since measurements began in Ny-Ålesund on Svalbard. Monitoring ... > full story -
International Treaty Designed To Restore, Protect Ozone Layer Working, Say Scientists
May 10, 2006 — Countries world wide have controlled the production and use of ozone-eating chlorine compounds, and the Earth's atmosphere appears to be recovering from losses of "good" ozone in the upper reaches of ... > full story -
Indoor Air Purifiers That Produce Even Small Amounts Of Ozone May Be Risky For Health
May 9, 2006 — In a small, poorly ventilated room, an indoor air purifier that produces even a few milligrams of ozone per hour can create an ozone level that exceeds public health standards, researchers at UC ... > full story -
Tibet Provides Passage For Chemicals To Reach The Stratosphere
May 9, 2006 — NASA and university researchers have found that thunderstorms over Tibet provide a main pathway for water vapor and chemicals to travel from the lower atmosphere, where human activity directly ... > full story -
Ozone Recovering, But Unlikely To Stabilize At Pre-1980 Levels, Says Study
May 4, 2006 — While Earth's ozone layer is slowly being replenished following an international 1987 agreement banning CFCs, the recovery is occurring in a changing atmosphere and is unlikely to stabilize at ... > full story
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