Reuters: The UK’s Department for Transport on Thursday clarified rules surrounding the inclusion of aviation in the EU’s Emissions Trading Scheme from 2012. Aviation generates 3 percent of all carbon dioxide (CO2) emissions in the 27-member bloc but has been left out of the EU’s flagship trading scheme so far due to fears it would damage the industry’s ability to compete in international markets. With air traffic set to double by 2020, however, Europe is keen to apply the …