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'Brown Clouds' Are World's Newest Environmental Threat By TINI TRAN AND JOHN HEILPRIN / AP WRITER Friday, November 14, 2008 BEIJING - A dirty brown haze sometimes more than a mile thick is darkening skies not only over vast areas of Asia, but also in the Middle East, southern Africa and the Amazon Basin, changing weather patterns and threatening health and food supplies, the UN reported. The huge smog-like plumes, caused mainly by the burning of fossil fuels and firewood, are known as "atmospheric brown clouds." Cars drive through thick smog on a street in Beijing in September 2008. Enormous brown clouds of pollution hanging over Asia are killing hundreds of thousands of people, melting glaciers, changing weather patterns and damaging crops, the United Nations said. (Photo: AFP) When mixed with emissions of carbon dioxide and other gases blamed for warming the earth's atmosphere like a greenhouse, they are the newest threat to the global environment, according to a report commissioned by the UN Environment Program and released Thursday. "All of these points to an even greater and urgent need to look at emissions across the planet," said Achim Steiner, head of Kenya-based UNEP, which funded the report with backing from Italy, Sweden and the United States. Brown clouds are caused by an unhealthy mix of particles, ozone and other chemicals that come from cars, coal-fired power plants, burning fields and wood-burning stoves. First identified by the report's lead researcher in 1990, the clouds were depicted Thursday as being more widespread and causing more environmental damage than previously known. Perhaps most widely recognized as the haze this past summer over Beijing's Olympics, the clouds have been found to be more than a mile (kilometer) thick around glaciers in the Himalaya and Hindu Kush mountain ranges. They hide the sun and absorb radiation, leading to new worries not only about global climate change but also about extreme weather conditions. "All t

Updated Dec 2011

Article for Climate change :- Unusual Arctic Warmth, Tropical Wetness Likely Cause for Methane Increase NOAA

Migration and displacement, caused by climate change, could vastly exceeds anything that has occurred before, according to a report launched today. Whole human populations may be forced to move for their own survival.

Climate change photos in the Nepalese mountains before and after

high-powered group of senior Republicans and Democrats led two missions to China in the final months of the Bush administration for secret backchannel negotiations aimed at securing a deal on joint US-Chinese action on climate change, the Guardian has learned.

I wanted to alert you to an excellent source that would fall directly under the new IB syllabus for Patterns in Env Quality and Sustainability.  When asking for a case study on sustainable management strategies, I'm using China's Loess Plateau.  There is an excellent film (on youtube and on the website) of a watershed rehabilitation project that has been incredibly successful.  This case study connects concepts of soil erosion, watersheds, climate change, and the social/econ and environmental consequences of this World Bank/Chinese gov't project.

The new kid on the energy block, shale gas, may be worse in climate change terms than coal, a study concludes. Drawn from rock through a controversial "fracking" process, some hail the gas as a "stepping stone" to a low-carbon future and a route to energy security.

A map launched at the Science Museum in London has been developed using the latest peer-reviewed science from the Met Office Hadley Centre and other leading impact scientists. It shows that the land will heat up more quickly than the sea, and high latitudes, particularly the Arctic, will have larger temperature increases

New York is a major loser and Reykjavik a winner from new forecasts of sea level rise in different regions.

One of the largest glaciers in Antarctica is thinning four times faster than it was 10 years ago, according to research seen by the BBC.