The historical debate is over. The answer is free-market capitalism.

America needs rebooting.

We are entering a hyperconnected world where every boss now has more access, cheap access to cheap labor, cheap genius, cheap robot, cheap software, and then this world averages over. There is only one answer to that, and that is to get everyone as close as possible to some form of post-secondary education, it could be vocational, it can be liberal arts, it can be science and technology.

A vision without resources is an hallucination.

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.

The ideal country in a flat world is the one with no natural resources, because countries with no natural resources tend to dig inside themselves. They try to tap the energy, entrepreneurship, creativity, and intelligence of their own people-men and women-rather than drill an oil well.

Scientists tend to focus on what they don't know more than what they do know. And there are a lot of things we still don't know about the climate. But we know the difference between climate variability and climate change, and right now the amount of carbon in the atmosphere is well outside the variability pattern - and that's quite quantifiable.