G8 leaders agreed to a climate-control deal today they hailed as a breakthrough, though it was unclear what it actually accomplished. They didn't adopt German Chancellor Angela Merkel's target of cutting emissions in half by 2050—already adopted by the EU, Canada and Japan—but they agreed to "seriously consider" it.
President Bush also yielded to an agreement that a successor treaty to the Kyoto accord could be negotiated through the UN, rather than a newly created group. That was enough to make British PM Tony Blair describe the result as a "major, major step forward." (Read more global warming stories.)