Asia pollution 'warming planet'
Updated on 13 November 2008
A thick brown cloud of soot, particles and chemicals stretching from the Persian Gulf to Asia threatens health and food supplies in the world, the UN reported, citing what it called the newest threat from global warming.
The regional haze, known as atmospheric brown clouds, contributes to the melting of Himalayan glaciers, reduces sunlight, and helps create extreme weather conditions that impact agricultural production, according to the report commissioned by the UN Environment Programme.
These so-called "brown clouds," caused by the burning of fossil fuels, wood and plants, play a significant role in exacerbating the effects of greenhouse gases in warming up the earth's atmosphere, the report said.
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