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Latest Ozone depletion Stories

2010-08-04 07:00:00

HANOVER, Pa., Aug. 4 /PRNewswire-FirstCall/ -- Weis Markets (NYSE: WMK) today announced three new stores it is building will incorporate technologies and systems reducing store refrigerant charges (usage) to 50% less than a typical supermarket, thus decreasing their impact on the ozone layer and climate change. In recent weeks, Weis Markets has begun the construction of superstores in three Pennsylvania locations: Bellefonte (Centre County), West Lawn (Berks County) and Fork Township...

2010-07-23 16:47:00

US Automaker to Switch from HFCs to Climate Friendly Refrigerants WASHINGTON, July 23 /PRNewswire-USNewswire/ -- General Motors has announced that it will convert the air conditioning systems in its entire fleet of Chevrolet, Cadillac, Buick and GM models from using high-GWP (global warming potential) refrigerants to a new refrigerant with a much lower climate impact. The HFC (hydrofluorocarbon) refrigerant currently used in virtually every American model car and truck, HFC-134a has a...

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2010-07-23 09:07:35

KIT Scientists Disprove Doubts in Ozone Hole Chemistry For the first time, KIT scientists have successfully measured in the ozone layer the chlorine compound ClOOCl which plays an important role in stratospheric ozone depletion. The doubts in the established models of polar ozone chemistry expressed by American researchers based on laboratory measurements are disproved by these new atmospheric observations. The established role played by chlorine compounds in atmospheric ozone chemistry is in...

2010-07-22 12:40:46

American Heart Association meeting report An early study in rats provides the first direct indication that a major component of smog might trigger cell death in the heart, researchers reported at the American Heart Association's Basic Cardiovascular Sciences 2010 Scientific Sessions "“ Technological and Conceptual Advances in Cardiovascular Disease. The study found that exposure to ground-level ozone over several weeks increased the activity of a substance that triggers cell death in...

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2010-07-08 09:50:20

Although global grain production must double by 2050 to address rising population and demand, new data from the University of Illinois suggests crop yields will suffer unless new approaches to adapt crop plants to climate change are adopted. Improved agronomic traits responsible for the remarkable increases in yield accomplished during the past 50 years have reached their ceiling for some of the world's most important crops. "Global change is happening so quickly that its impact on...

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2010-06-24 14:11:31

Human-driven changes in the earth's atmospheric composition are likely to alter plant diseases of the future. Researchers predict carbon dioxide will reach levels double those of the preindustrial era by the year 2050, complicating agriculture's need to produce enough food for a rapidly growing population. University of Illinois researchers are studying the impact of elevated carbon dioxide, elevated ozone and higher atmospheric temperatures on plant diseases that could challenge crops in...

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2010-06-16 13:47:28

Chemicals that helped solve a global environmental crisis in the 1990s "” the hole in Earth's protective ozone layer "” may be making another problem "” acid rain "” worse, scientists are reporting. Their study on the chemicals that replaced the ozone-destroying chlorofluorocarbons (CFCs) once used in aerosol spray cans, air conditioners, refrigerators, and other products, appears in ACS' Journal of Physical Chemistry A, a weekly publication. Jeffrey Gaffney, Carrie J....

2010-05-28 10:43:00

FARMINGTON, Conn., May 28 /PRNewswire/ -- Twenty-five years ago this month, three scientists published an article in Nature magazine alerting the world to the discovery of a hole in the Earth's stratospheric ozone layer. This discovery triggered action by governments, industry, and environmentalists around the world and contributed to the Montreal Protocol agreeing to phase-out the production and consumption of chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) used as...

2010-05-25 07:40:00

The eruption of the volcano in Iceland has drawn attention to air flow patterns, as airlines lost millions of dollars and travelers remained stranded for days to weeks, as particles from the natural disaster traveled over Europe, forcing closures of major airports. The flow of particles, although seemingly random, can be characterized more effectively, according to work done by Virginia Tech's Shane Ross of the engineering science and mechanics (ESM) department and his colleague Francois...

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2010-05-18 07:42:52

Kudzu, an invasive vine that is spreading across the southeastern United States and northward, is a major contributor to large-scale increases of the pollutant surface ozone, according to a study published the week of May 17 in the journal Proceedings of the National Academy of Sciences. Kudzu, a leafy vine native to Japan and southeastern China, produces the chemicals isoprene and nitric oxide, which, when combined with nitrogen in the air, form ozone, an air pollutant that causes...


Word of the Day
negawatt
  • A unit of saved energy.
Coined by Amory Lovins, chairman of the Rocky Mountain Institute as a contraction of negative watt on the model of similar compounds like megawatt.