In the Energy [R]evolution U.S. Scenario, Greenpeace and the European Renewable Energy Council (Europe's largest renewable energy trade association) posed a simple but daring series of questions. First, is it possible, using currently available technologies, to cut carbon dioxide (CO2) emissions worldwide to the levels needed to prevent the worst effects of global warming? Second, can we do it while also achieving strong economic growth? Third, since the dangers of nuclear waste and proliferation pose similar existential threats to humanity as global warming itself, can we also phase out all nuclear power by 2050? And, finally, can we do it here in the U.S.?

The answer, from some of the world's top energy experts at the German Aerospace Center (Germany's counterpart to National Aeronautics and Space Administration), is a resounding yes on all counts.

A Siegel has personal coverage of the press conference in Washington yesterday.

In the long run, we're all dead. John Maynard Keynes