Saudi hijackers first came into contact with al-Qaeda and went through Terrorism 101 when they signed up for the jihad in Afghanistan.

Hope and optimism aren't just attitudes, they are life strategies.

I firmly believe that the next great breakthrough in bioscience could come from a 15-year-old who downloads the human genome in Egypt.

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.

Guantanamo Bay is the anti-Statue of Liberty.

If I were advising President Obama, since he's the one running, I would have made his campaign very simple. I promise that in four years, I will get more Americans, as many as I possibly can, the opportunity and access to some form of post-secondary education. I want more of them to graduate high school with the skill-set of post-secondary education and I want more of them to be able to obtain that post-secondary education. This is the only way we are going to close the income gap.

Today, natural gas now outstrips coal as the leading provider of electricity in America. If this is as big as people believe it is, natural gas will soon be powering trucks and marine ships. Maybe even standard commercial cars that people use at home through compressed natural gas, other gas to liquids. The potential is there for more energy independence by America and a reliance on cleaner fuel - natural gas emits half as much as coal, in terms of carbon emissions. That's a real bounty.