24 Sep 2014 “Proud that cities are working together and speaking with one voice”. Mayor Juergen Nimptsch, Bonn, presenting carbonn Climate Registry on UN Radio BY Global Communications Team IN Exploring issues that matter Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on WhatsApp (Opens in new window)