Sorghum is kind of unusual. It can go to very high heats, but it's not as productive in most environments as maize is.

Every three years, we have to go to the governments and say, okay, you know you're saving millions of lives and even though your budgets are tight, helping Africa avoid this disaster really is a priority.

The idea of explaining why free trade is good, why immigration is good, why the world is so connected, that we need to think in terms of humanity and being generous to each other, you know, that's proving to be a challenge.

[Africa] is the one continent where you still have a lot more young people than old people. So making sure they're healthy, good nutrition, good education. That'll be important for the world.

Convert bad news to good news.

And knowledge management is a means, not an end.

There is no author whose books I look forward to more than Vaclav Smil.