A group of 500 businesses and nonprofit executives on Tuesday urged global governments to take action on climate change, saying failure to do so would result in catastrophe for the planet and global markets...The U.N. Leadership Forum on Climate Change discussed ways to help deal with the worst consequences of global warming as part of a top-level U.N. meeting on the issue...Robert Orr, an aide to U.N. Secretary General Ban Ki-Moon, said…40 percent of the companies in the leadership forum had logged their climate actions on the Carbon Disclosure Project. [refers to BP, Duke Energy, Shell, Suntech Power]