Michael Bloomberg, Mayor of New York City and Chairman of the C40 Cities Climate Leadership Group (C40) and Roland Busch, CEO of Siemens Infrastructure & Cities Sector and member of the managing board of Siemens AG, agree on collaboration between the city network and Siemens to combat the impacts of global climate change. The collaboration, both a technical partnership and a global prize competition to recognize city actions and innovation will accelerate C40 city actions to combat the impacts of global climate change.