At least he’s keeping busy.

Former New York City Mayor Michael Bloomberg has been tapped to be U.N. special envoy for cities and climate change, sources familiar with the situation said on Thursday.

Barring any last minute changes, U.N. Secretary-General Ban Ki-moon – who is seeking to re-energize the global climate change debate and boost the United Nations’ role – could make the announcement as early as Friday, the sources said on the condition of anonymity.