Researchers say aviation contributing more to global warming than thought; alternative fuels more urgently needed

Researchers at the Manchester Metropolitan University Centre for Air Transport and the Environment and the Potsdam Institute for Climate Impact Research concluded that global aviation have been responsible for 4.7 percent of the global mean temperature rise between 1940 and 2005.

The researchers also found that global aviation CO2 emissions grew 42 percent from 1990 and 2005. Currently, aviation is believed to have been responsible 2.8 percent of global warming impact.

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