Part of what is wrong with the view of American imperialism is that it is antithetical to our interests. We are better off when people are governing themselves. I'm sure there is some guy that will tell you that philosophy is no different from the Roman Empire's. Well, it is fundamentally different.

I certainly don't like a label that suggests I believe that the military is the solution to most of the world's problems.

China, in the future, is going to have even more nuclear capability than it has had in the past. I don't believe that they have anything to fear from the United States, and I frankly don't believe they do fear the United States.

The internal affairs of other countries has a big impact on American interests.

The goal is to normalize trade relations based on sound science and consumer protection.

The idea that, you know - when I was growing up - that everybody would carry around a portable communicating device, that was science fiction when I was a kid.

While fractal geometry is often used in high-tech science, its patterns are surprisingly common in traditional African designs.

Sometimes I worry that science communication is just preaching to the choir, speaking to the converted. Social media gives us an amazing opportunity to reach new people.