Combating climate change requires government policy, and most conservatives hate the idea of more government regulation. Because they hate the prescription, they deny the diagnosis.

Iraq today does have a chance to shape its own future. They may not do that, or this generation may not do that. But maybe the next one will, I don't know. They may try and fail, and stumble, get up and fall back.

Geopolitics is all about leverage. We cannot make ourselves safer abroad unless we change our behavior at home.

Rock stars get room keys, I get business cards. Wherever I go I meet innovators of wind power equipment, solar energy operators.

The hidden hand of the market will never work without a hidden fist.

We've gone from thinking the fuels that powered our growth were inexpensive, inexhaustible and benign to understanding they are exhaustible, expensive and toxic. Once you frame the problem that way, people will look at solutions differently.

Big breakthroughs happen when what is suddenly possible meets what is desperately needed