mirrors orbiting outer space; giant reflectors between the Earth and the Sun; trillions of helium balloons in the air. Does this read like a sci-fi script to you? These are some of the rather elaborate solutions to counter the rising carbon dioxide ( co2 ) levels in the atmosphere. These ideas may sound too far-fetched, but they do make a point. "People look at this kind of thing to get a sense of the greenhouse effects,' says Michael MacCracken, head of the Office of the Global Change Research Programme. "The main thing we are learning is
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[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/carbon-dioxide
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/atmosphere
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-change
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/green-house-gases
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/tropical-diseases
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/fossil-fuels
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