Biofuels such as ethanol require enormous amounts of cropland and end up displacing either food crops or natural wilderness, neither of which is good.

The path to the CEO's office should not be through the CFO's office, and it should not be through the marketing department. It needs to be through engineering and design.

It's a fixer-upper of a planet but we could make it work.

We need to figure out how to have the things we love, and not destroy the world.

Patience is a virtue, and I'm learning patience. It's a tough lesson.

We're running the most dangerous experiment in history right now, which is to see how much carbon dioxide the atmosphere can handle before there is an environmental catastrophe.

Most people can learn a lot more than they think they can. They sell themselves short without trying.