Das Projekt "One Tonne Society (OTS)" wird vom Umweltbundesamt gefördert und von Potsdam-Institut für Klimafolgenforschung e.V. durchgeführt. A field test of CO2 footprint reduction in private households with regard to the areas mobility, private consumption and housing energy. The One Tonne Society project prepares a business model that attempts to reduce the carbon footprints of volunteer private households in three European cities (Uppsala, Berlin, Bologna) under real world conditions. The participating households will be offered to change the way they use energy, food, and means of transportation for various purposes. The business partners involved provide the infrastructure, information, support, and measurement, while the scientific partners develop methods, analyse, monitor and inform. Together, the partners want to find out how present day consumers can embark on a journey of living a low-carbon life of one tonne CO2 per capita and year-as all humans need to by 2050 if we want to meet the two degree temperature target.