US wants to move on climate change

The Obama administration, in a major environmental policy shift, is preparing to ask 195 nations that ratified the UN ozone treaty to enact mandatory reductions in hydrofluorocarbons, according to U.S. officials and documents obtained by The Associated Press. The change - the first US-proposed mandatory global cut in greenhouse gases - would transform the ozone treaty into a strong tool for fighting global warming. "Now it's going to be a climate treaty, with no ozone-depleting materials, if this goes forward," an Environmental Protection Agency technical expert on the ozone treaty said Wednesday, speaking on condition of anonymity because a decision was not final. The expert said the 21-year-old ozone treaty known as the Montreal Protocol created virtually the entire market for hydrofluorocarbons, or HFCs, so including them in the treaty would take care of a problem of its own making.