I have always been fascinated with those who try to look over the horizon and see things that are coming at us.

I've learned the importance of changing people's minds at the grassroots level so that whoever does run will have a much better chance of encountering public opinion that reaches a critical mass and brings about a change not only in White House policies but in the Congress and in the state legislatures and all around the world.

The signs that the world is spinning out of kilter are increasingly difficult to misinterpret. The question is how to convince enough people to join a critical mass of urgent opinion, in the U.S. and the rest of the world.

CO2 is the exhaling breath of our civilization, literally... Changing that pattern requires a scope, a scale, a speed of change that is beyond what we have done in the past.

I think there will be 20 years of evolution from linear broadcast to internet television.

If you're going to go into space, you have to have an objective, a mission. Where do you want to go? Earth orbit? The moon? Mars? What's the technology to get there? You develop the technology for the mission.

Remember, 'governance' is a big word that includes human rights, freedom of speech, economic transactions on a worldwide basis - it touches everything. It's everywhere, and that's why Internet governance is Topic A in many corners.

I started my career as a journalist, writing about science and technology for 'Business Week' magazine. Then I decided to make a career shift. I went to graduate school in computer science, and I began developing educational technologies - in particular, technologies to engage children in creative learning experiences.