President Obama and other world leaders gathered in L'Aquila, Italy, this week for wide-ranging G-8 talks that included discussions of how to combat climate change. That subject grows in importance as December's U.N. climate summit looms closer, but its prospects became hazier  when Chinese President Hu Jintao pulled out at the last minute, returning to China to address violent riots there that have killed 156 people. While China has criticized a specific provision in the U.S. climate bill, many European leaders, such as German Chancellor Angela Merkel, have doubts that it goes far enough. (Text from The Daily Briefing)