Land degradation, rising sea levels, famine, and conflict will continue to drive people from their homes and towards cities, with megacities like Mexico City and Lagos becoming increasingly common in some of the poorest parts of the world.

When it comes to providing aid, developing innovations, and making bold steps that change the course of history, the United States is usually on the front lines.

Finding innovative ways to deliver vaccines to children in developing countries is at the heart of our work. The very fact that we don't have people on the ground but rather work in an alliance with other organizations is itself an innovation that was the basis of GAVI's establishment in 2000.

No country in the post-colonial era has thrived without first building its capacity to conduct scientific research.

Coming up with a simple statement like 'I choose health' is a good beginning.

I sleep five or six hours a night, then crash at the weekend. I'm learning to eat properly and exercise. I relax by watching silly sitcoms like 'Scrubs' and 'How I Met Your Mother.'

I was really into fitness.

When we exercise, it feels like we're really out there doing something, whereas spending a few minutes with your eyes closed in meditation may feel a little, well, wimpy.