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.

Mental health is often missing from public health debates even though it's critical to wellbeing.

Cancer essentially lives in us and becomes activated at some point, and then cells begin to psychotically divide. Initially, the cancer cell looks like other cells and the body invites it in.

It is crucial to be healthy, for pain wipes out the possibility for pleasure, and severe pain removes the possibility of turning to the world outside the body. So we must establish the idea that it is important to look well, not to look young.

While receiving radiation treatment for a thyroid illness, I had refused to take beta-blockers - a medication that would have eased its side effects - because they were deemed illegal by the sport's governing body, the International Association of Athletics Federations.