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Latest Ozone depletion Stories

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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...

2010-04-30 15:05:00

Proposals Would Tackle HFCs at Montreal Protocol, Reap Huge Climate Benefits WASHINGTON, April 30 /PRNewswire-USNewswire/ -- The State Department announced the formal submission of two proposals by Canada, Mexico and the U.S. seeking action to phase down global production and use of hydrofluorocarbons (HFCs) under the Montreal Protocol. If agreed to by other nations, an international phase down of these powerful greenhouse gases (GHG) could begin almost immediately. The nation of...

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2010-04-29 07:28:19

A new NASA study of Earth's polar ozone layer reinforces scientists' understanding of how human-produced chlorine chemicals involved in the destruction of ozone interact with each other. A team of scientists led by Michelle Santee of NASA's Jet Propulsion Laboratory, Pasadena, Calif., examined how nighttime temperatures affect chlorine monoxide, a key chemical involved in ozone destruction. Combining NASA satellite measurements with a state-of-the-art chemical model, they found this...

2010-04-27 07:15:00

BELLINGHAM, Wash., April 27 /PRNewswire/ -- Captain Ozone allegedly started the modern-day "real-life superhero" movement when he made his debut in 1989. He's considered by many to be the most phenomenal environmental activist of all time. Captain Ozone is saving endangered species, promoting renewable energy and ecological art, and also teaching school kids how to become environmental activists on television. The masked man claims to be from the year 2039 and he time-traveled to 1989...

2010-04-13 12:59:00

SILVER SPRING, Md., April 13 /PRNewswire-USNewswire/ -- The U.S. Food and Drug Administration today announced, in accordance with longstanding U.S. obligations under the Montreal Protocol on Substances that Deplete the Ozone Layer, seven metered-dose inhalers (MDI) used to treat asthma and chronic obstructive pulmonary disease (COPD) will be gradually removed from the U.S. marketplace. These inhalers contain ozone-depleting chlorofluorocarbons (CFCs), which are propellants that move...

2010-04-08 14:37:29

Surface ozone levels in the south west of the Iberian Peninsula usually exceed the protection threshold established by EU regulations for people and plants in spring and summer, according to data gathered between 2000 and 2005 by four measuring stations in Huelva, one of them next to the Doñana National Park. The limits established to protect human and plant health by the European Directive on ozone are usually exceeded from April onwards, especially during the summer, in...

2010-04-08 10:20:00

WASHINGTON, April 8 /PRNewswire-USNewswire/ -- NASA has successfully completed the first science flight of the Global Hawk unpiloted aircraft system over the Pacific Ocean. The flight was the first of five scheduled for this month's Global Hawk Pacific, or GloPac, mission to study atmospheric science over the Pacific and Arctic oceans. (Logo: http://www.newscom.com/cgi-bin/prnh/20081007/38461LOGO) The Global Hawk is a robotic plane that can fly autonomously to altitudes above 60,000...


Word of the Day
sough
  • A murmuring sound; a rushing or whistling sound, like that of the wind; a deep sigh.
  • A gentle breeze; a waft; a breath.
  • Any rumor that engages general attention.
  • A cant or whining mode of speaking, especially in preaching or praying; the chant or recitative characteristic of the old Presbyterians in Scotland.
  • To make a rushing, whistling, or sighing sound; emit a hollow murmur; murmur or sigh like the wind.
  • To breathe in or as in sleep.
  • To utter in a whining or monotonous tone.
According to the OED, from the 16th century, this word is 'almost exclusively Scots and northern dialect until adopted in general literary use in the 19th.'
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