The ideal thing would be to have a 100 percent effective AIDS vaccine. And to have broad usage of that vaccine. That would literally break the epidemic.

Intermittency [in availability for wind and solar] changes the economics, particularly this requirement that the power company at all times be able to require power. That's large.

In inner-city, low-income communities of color, there's such a high correlation in terms of educational quality and success.

How you gather, manage, and use information will determine whether you win or lose.

When AIDS emergency broke out and was killing millions in Africa, the Global Fund was created so that a level of generosity would show up and buy the medicines to save those lives.

People are going to buy cheap fertilizer so they can grow enough crops to feed themselves, which will be increasingly difficult with climate change.

You can make money and you can make excuses, but you can never make money out of excuses