Our president's latest energy initiative was to go to Saudi Arabia and beg King Abdullah to give us a little relief on gasoline prices. I guess there was some justice in that. When you, the president, after 9/11, tell the country to go shopping instead of buckling down to break our addiction to oil, it ends with you, the president, shopping the world for discount gasoline.

That's right-the striking thing about greenhouse gases is the diversity of sources that emit them. A herd of cattle belching can be worse than highway full of hummers.

If you don't have an ethic of conservation, you basically have a license to drive a Hummer through the Amazon.

We're going in the wrong direction and I think the only way to counter that is to bring the story home in really concrete ways to people - in ways that kids can understand and non-scientists can understand.

McDonald's cannot flourish without McDonnell Douglas, the builder of the F-15.

A 2011 report produced by Forrester Research estimated that the revenue generated through the sales of smartphone and tablet applications will reach $38 billion annually by 2015. Think about that: An industry that did not exist in 2006 will be generating $38 billion in revenues within a decade. . . .

The philosopher Ludwig Wittgenstein once remarked that if you ask a man how much is two plus two and he tells you five, that is a mistake. But if you ask a man how much is two plus two and he tells you ninety-seven, that is no longer a mistake. The man you are talking to is operating with a wholly different logic from your own.