There will be water and food fights everywhere.

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

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.

When you're working on development issues, optimism is not always based on rational analysis, often it is a moral choice.

We have to find climate-friendly ways of encouraging economic growth. The good news is we think they exist.

A lot of young people dont think they can make a difference. Thats really what I am at Dartmouth to do. Im there to tell the young people, Look, a few committed souls can change the world.

We will never end poverty if we don't tackle climate change.