New York City’s former mayor, Michael Bloomberg, has a new job. Bloomberg appointed U.N. envoy for cities, climate change

The billionaire media mogul has been appointed special envoy for cities and climate change, United Nations Secretary-General Ban Ki-moon announced Friday.

Bloomberg will assist Ban in consultations with mayors and others “to raise political will and mobilize action among cities as part of his long-term strategy to advance efforts on climate change,” he added in a statement.

Those efforts include bringing solutions to the climate summit Ban is hosting in September in New York.