LONDON — Do not be downhearted about the outcome of the Bali talks. They did not deliver the binding commitments to cuts in greenhouse gas emissions that are desperately needed, and as a result millions may die who might have lived. But they did show us something remarkable. They showed us the human race trying to grow up and take responsibility for its common future.

It doesn't feel like that, of course. It feels like 15,000 politicians, diplomats, journalists and activists flew across continents in order to sit in Bali for two weeks and achieve very little. Disappointment and even anger are not out of order, for the commitment to early and deep emission cuts (25 to 40 percent by 2020) that most developed countries wanted to see in the draft treaty had to be dropped in order to keep the United States involved at all.

The Bush administration no longer denies that climate change is a problem, but it is still determined to kill any international deal that involves concrete and legally binding targets. The U.S. produces about a quarter of the world's emissions, so no deal that excludes it would work.