In the U.K., there is a legal commitment to reducing the net carbon account for all six greenhouse gases by 80 percent (1990-2050) under the Climate Change Act 2008, and recently this target has been raised to 100 percent. By 2050 U.K. greenhouse gas emissions will be cut to net zero. At present the aviation sector has been allowed to set and deliver voluntary targets. As globalization progresses, more goods and people are being transported further and more frequently at ever-increasing CO2 costs. The aviation sector accounts for 7.3 percent of U.K. CO2 emissions, but by 2050, aviation may account for over 20 percent of all U.K. CO2 emissions. This radically changing position is a combination of other sectors reducing their levels of CO2 emissions whilst international aviation’s share of the total continues to increase.
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Source: Phys.org