Bloomberg: Cuts in heat-trapping CO2 emissions proposed by the United States, Canada and the European Union will reduce output of the greenhouse gas less than needed to halt a “climate catastrophe,” Greenpeace said. Total emissions cuts proposed so far by industrialized countries will lead to a carbon-dioxide output reduction of 4 percent to 14 percent by 2020 from 1990 levels, Greenpeace said today at United Nations climate talks in Bonn. The International Panel on Climate Change, or IPCC, says …