Forbes: It has been a busy week for climate change. In his first visit to the United States, Pope Francis chose to make climate change a central tenant of his trip, speaking about it more than any other topic in his address on the White House lawn on Wednesday, emphasizing it in his United Nations speech, and choosing it as his single call to action when speaking before Congress Thursday. On Friday China announced a new cap-and-trade emissions reduction program. All of this comes on the heels of President...