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.

The rush into scripted video by tech giants is going to accelerate an evolution of entertainment that's already underway. We're already moving away from the idea that drama is a 60-minute exercise with four bathroom breaks.

Take Hispanic voters. They favor Democrats because they like the party's programs, from health care reform to government spending on education. It's not because the Republicans don't have a big enough Office of Hispanic Outreach.

Economists specialize in pointing out unpleasant trade-offs - a skill that is on full display in the health care debate. We want patients to receive the best care available. We also want consumers to pay less. And we don't want to bankrupt the government or private insurers. Something must give.

Whenever women struggle with breast cancer and face better care than ever, that's feminism.