As the earth spins through space, a view from above the North Pole would encompass most of the wealth of the world - most of its food, productive machines, doctors, engineers and teachers. A view from the opposite pole would encompass most of the world's poor.

After all, despite the economic advantage to firms that employed child labor, it was in the social interest, as a national policy, to abolish it - removing that advantage for all firms.

All of the clean technologies are known, it's a question of simply applying them.

In certain ways, I'm not very different than I was when I was a teenager.

The goal must be to expand ourselves beyond one field of focus and use our improved access to information to solve the very real and extreme economic, environmental, and resource challenges we face as an interconnected, global society.

Renewables are critical in our fight against climate change.

That's the big mistake the environmental movement made - 'We'll scare the hell out of you, and you'll become an activist'.

I have friends who are science journalists, and I'm seeing stories of theirs or talking with them about ideas that they're pitching. Certain kinds of science are around me all the time, like climate change and biology.