The more you learn, the more you have a framework that the knowledge fits into.

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

I choose a lazy person to do a hard job. Because a lazy person will find an easy way to do it.

Depending on how quickly you get ocean rise, you have people who live in river deltas [at risk].

Measles will always show you if someone isn't doing a good job on vaccinations. Kids will start dying of measles.

Ninety percent of the cases of polio are in security-vulnerable areas.

Before you were born, your parents weren't as boring as they are now. They got that way from paying your bills, cleaning your clothes and listening to you talk about how cool you thought you were. So before you save the rain forest from the parasites of your parent's generation, try delousing the closet in your own room.