Many Republican mayors are advancing climate-friendly policies without saying so

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.)

(THE CONVERSATION) Leadership in addressing climate change in the United States has shifted away from Washington, D.C. Cities across the country are organizing, networking and sharing resources to reduce their greenhouse gas emissions and tackle related challenges ranging from air pollution to heat island effects.

But group photos at climate change summits typically feature big-city Democratic mayors rubbing shoulders. Republicans are rarer, with a few notable exceptions, such as K...