Yvo de Boer
As the odds that the Senate will pass a climate bill this year grow dim, the major question is what this means for the climate talks at Copenhagen in December. It's now looking increasingly unlikely that world leaders will be able to finish up a successor treaty to the Kyoto Protocol by the end of 2009, and some U.N. officials are already lowering expectations. "Copenhagen has to be viewed as a very important step," said U.N. Development Chief Helen Clark this week. "Would it be overoptimistic to say that it would be the final one? Of course.