Pittsburgh Post-Gazette: Two days ahead of a United Nations climate summit, tens of thousands will gather today in New York City for a "people's march' against climate change. Leaders at the U.N. meeting should pay attention. This time, the public is watching.
Summit participants will make no big decisions. Instead, the event is aimed at gathering momentum and political will in anticipation of U.N. talks on a binding climate protocol next year.
Climate activists have a lot to be agitated about. The United States has...