Obama to shift focus to climate change

After months of almost single-minded focus on healthcare, President Obama is about to shift the White House spotlight to global warming -- first with a speech to the United Nations in New York on Tuesday, then later in the week at the G-20 economic conference in Pittsburgh. The renewed emphasis on climate change and reducing carbon dioxide emissions comes at a crucial time: Negotiators are entering the home stretch in a drive to unveil a comprehensive international agreement to curb rising temperatures at a December conference in Copenhagen. With key divisions remaining among the major industrialized nations, as well as with developing industrial powers and poorer nations, there is concern that negotiations leading up to Copenhagen could be bogging down. Obama administration officials, while admitting the seriousness of the challenges, hold out hope for a deal...LATimes