Christian Science Monitor: On the first Earth Day in 1970, environmental sentiment was proudly worn and fiercely optimistic. It tapped into a deep concern for our future shared by young and old; rich and poor; left, right, and center. Now, as the world faces an accelerating global climate crisis, political will has faded and divided. Grand bargains are far from view. And failure to find common ground and cut carbon pollution could tank the biosphere in ways we cant imagine. And yet, today, Im hopeful. Even though almost...