Studies from IPCC and the Netherlands Environmental Assessment Agency show that industrialised countries can achieve stabilisation at 450 ppm, if their emissions are reduced by 25 to 40% below 1990 levels, by 2020. Developing countries need to reduce their emissions by15 to 30% below ‘Business-as-usual’, by 2020. These numbers have been adopted as the EU position at the UN Climate Summit in Poznan (Poland).