CNN: Leaders of both industrialized powers and emerging economies have agreed to work together on setting a goal to limit global warming to levels recommended by scientists, U.S. President Barack Obama said at the G-8 summit. G-8 leaders wait for an aide to remove toe markers as they pose for a family photo in L’Aquila, Italy, on July 8. The G-8 countries — comprising the United States, Britain, France, Germany, Italy, Japan, Canada and Russia — agreed to a target of reducing …