If your goal is to make the world a better place, one thing you can do is pick a specific challenge that you really care about. Then, learn as much as you can about it and try to volunteer your time to help an organization that is working in this area. While you're doing that, look for creative new ways to use technology to tackle parts of the problem that you come in contact with.

Often you just have to rely on your intuition.

With a public library card in your hand, you have access to the Internet and a world of opportunities.

There's always a tricky issue when you get into stolen material or pornography. The laws for online publishing the same as for print-based publishing, where if you're hosting certain types of things and somebody notifies you about that.

In most of these things our foundation is a co-funder, so I can say that a polio or an HIV vaccine, that I'm putting our resources behind it in a very big way and the U.S. government would be the best partner for those efforts.

Bitcoin is a technological tour de force

Globalization has made copper and other minerals more valuable, and Ghana and Kenya have recently discovered mineral resources.