Yvo de Boer spends most of his time on the move, so it makes sense that he has a predilection for running metaphors. The head of the United Nations Framework Convention on Climate Change (UNFCCC), de Boer was in Bonn over the past two weeks, helping to run the latest round of international negotiations on global warming action, which concluded April 8. (See pictures of the effects of global warming.) More than 2,700 delegates from 180 countries met in the German city for the talks, intended to set the stage for the main event: the U.N. summit in Copenhagen in December, where nations are expected to hammer out a successor to the expiring Kyoto Protocol. ‘If this were a marathon I think I’d say the runners were gathering their stamina for the final sprint,’ de Boer told reporters on the closing day. (See the top 10 green ideas of 2008.) But while the deadline may be getting nearer every day, the world seems to be largely running in place. The Bonn talks were the first international meeting to be attended by President Barack Obama’s climate negotiators - along with palpable relief from the rest of the world that […]