News tagged with emission levels

The secret of nanoparticle packing in cement

Cement production is responsible for 5% of carbon dioxide emissions. If we are to invent a "green" cement, we need to understand in more detail the legendary qualities of traditional Portland cement. A research group partly ...

dateDec 20, 2012 in Materials Science
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UN conference adopts extension of Kyoto accord

(AP)—A U.N. climate conference agreed Saturday to extend the Kyoto Protocol, a treaty that limits the greenhouse gas output of some rich countries but which will only cover about 15 percent of global emissions.

dateDec 09, 2012 in Environment
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Fractious climate talks enter second week

Countries entered a second week of UN climate talks in Doha deeply divided on key issues even as fresh warnings were issued that rising greenhouse gas levels are putting our planet in peril.

dateDec 03, 2012 in Environment
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