What happens when corn and wheat prices rise is that we see real increases in malnutrition and under-nutrition. And when children are malnourished, their brain development actually slows down and is affected. So this is not just a short-term impact.

There will be water and food fights everywhere.

Ending poverty and ensuring sustainability are the defining challenges of our time. Energy is central to both of them.

One of the most important things about leadership is that you have to have the kind of humility that will allow you to be coached.

Water and sanitation has not had the same kind of champion that global health, and even education, have had.

Carbon is the currency of how you measure climate change, but water will be the teeth.

We need to have a plan equal to the challenge.