Our goal in science is to discover universal laws of nature. That pursuit fills me with wonder.

I tell personal stories associated with aspects of the theory, and I hope they are interesting and compelling. I don't feel you're going to change a grownup's mind in one reading. People have to be exposed to scientific ideas over and over again for years. It's also not a textbook.

By the way, most of the light that comes from the sun is green.

Reading their letters and the First Amendment of the US Constitution, I infer that this nation's founders noted that religions have been at the center of great deal of trouble, so they precluded the US government from getting involved in religion, i.e. "... shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof..." Over the centuries, various religions have laid claim to various morals; consider the difficulties outsiders are having today in the Middle East, for example.

I say to the grown-ups, 'If you want to deny evolution and live in your world that's completely inconsistent with everything we've observed in the universe that's fine. But don't make your kids do it.'

Unlike science, creationism cannot predict anything, and it cannot provide satisfactory answers about the past.

It is my mission to change the world. I'm not kidding: Make no small plans, dream mighty things. I feel if we get enough people engaged in climate change, we will get enough people to change the world. We will revolutionize the way we produce electricity and provide clean water to people.