Politicians don't like to face unpleasant realities. In truth, nobody does, but as individuals, we have no choice; if we neglect to plan ahead, we are held accountable. Fail to meet your responsibilities at work, and you get fired. Ignore your car's gas gauge, and you get stranded.

Nuclear energy is a baseload - meaning it's power that you can run any time you want, day or night - and carbon-free.

If your kitchen smells good, your food lost something.

One of the things that I love to do is travel around the world and look at archaeological sites. Because archaeology gives us an opportunity to study past civilizations, and see where they succeeded and where they failed. Use science to, you know, work backwards and say, 'Well, really, what were they thinking?'

The magic words 'on the Internet,' if inserted into nearly any sentence, seem to protect it from normal critical scrutiny.

I've been on a team that won the world championship of barbecue. But barbecue's interesting, because it's one of these cult foods like chili, or bouillabaisse. Various parts of the world will have a cult food that people get enormously attached to - there's tremendous traditions; there's secrecy.

People get cranky when you burst their bubble. Over time, advances in astronomy have relentlessly reinforced the utter insignificance of Earth on a celestial scale. Fortunately, political and religious leaders stopped barbecuing astronomers for saying so, turning their spits with human-rights activists instead.