I'm not a natural story-teller. Put a keyboard in front of me and I'm fine, but stand me up in front of an audience and I'm actually quite shy and reserved.

You can always tell a Midwestern couple in Europe because they will be standing on a traffic island in the middle of a busy intersection looking at a windblown map and arguing over which way is west. European cities, with their wandering streets and undisciplined alleys, drive Midwesterners practically insane.

It is not as if farming brought a great improvement in living standards either. A typical hunter-gatherer enjoyed a more varied diet and consumed more protein and calories than settled people, and took in five times as much viatmin C as the average person today.

It isn't easy to become a fossil. ... Only about one bone in a billion, it is thought, becomes fossilized. If that is so, it means that the complete fossil legacy of all the Americans alive today - that's 270 million people with 206 bones each - will only be about 50 bones, one-quarter of a complete skeleton. That's not to say, of course, that any of these bones will ever actually be found.

Science has been quite embattled. It's the most important thing there is. An arts graduate is not going to fix global warming. They may do other valuable things, but they are not going to fix the planet or cure cancer or get rid of malaria.

If you can imagine a man having a vasectomy without anesthetic to the sound of frantic sitar-playing, you will have some idea of what popular Turkish music is like.

Have you ever seen Glenn Beck in operation? It is the most terrifying thing. It's so bad that you think he's going to announce in a minute that it's all a great con. He makes Sarah Palin look reasonable and steady.