President Barack Obama and other G-8 leaders are meeting in Italy today. Top of their agenda is climate change. The leaders of the world's top industrialized nations are aiming at new targets to battle global warming, including a goal of keeping the world's average temperature from rising more than 2 degrees Celsius. But the wealthy nations were unable to persuade leaders of developing countries to commit to reductions of their own. Their cooperation is considered critical to avoiding the worst effects of climate change. Joining us from L'Aquila, Italy, is Peter Baker, New York Times correspondent, and Richard Gowan, associate director of New York University's Center on International Cooperation, a thinktank that works on the G-8, the U.N. and the World Bank.

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