The competition to hire the best will increase in the years ahead. Companies that give extra flexibility to their employees will have the edge in this area.

The key thing you can do to reduce population growth is actually improve health.

The Internet will help achieve "friction free capitalism" by putting buyer and seller in direct contact and providing more information to both about each other.

The spread of online information isn't just good for charities. It's also good for donors. You can go to a site like Charity Navigator, which evaluates nonprofits on their financial health as well as the amount of information they share about their work.

The tablet is not mainstream. Reading off the screen is not mainstream.

I'm not big on to-do lists. Instead, I use e-mail and desktop folders and my online calendar. So when I walk up to my desk, I can focus on the e-mails I've flagged and check the folders that are monitoring particular projects and particular blogs.

So not only are we saving lives now, we're creating the incentive for the breakthroughs that over the next generation will mean we can take AIDS, malaria and TB and bring those numbers dramatically down.