Rome, MARCH 8 - A report by the Organisation for Economic Cooperation and Development presented in Rome on Friday shows that Italian cities make up more than 50% of the 30 European Union cities with the worst air quality. Atmospheric emissions of pollutants have dropped more sharply in Italy than in other OECD countries, however, the report noted. "In 2010 greenhouse gas emissions were 6.2% lower than they had been in 1990", compared with a Kyoto Protocol target of 6.5% for 2008-2012. The drop is in part due the absorption of greenhouse gas emissions by forests and a fall in emissions due to the economic crisis. Environment Minister Corrado Clini attended the presentation.