Every crazy fad from the 1800s comes back or they never go away. It’s like fashion, like everything’s already been invented, and somebody stumbles onto it and people will always, always be looking for an answer for some vague illness they can’t get a diagnosis for.

The point is that no matter what you choose to do with your body when you die, it won't, ultimately, be very appealing. If you are inclined to donate yourself to science, you should not let images of dissection or dismemberment put you off. They are no more or less gruesome, in my opinion, than ordinary decay or the sewing shut of your jaws via your nostrils for a funeral viewing.

It would be especially comforting to believe that I have the answer to the question, What happens when we die? Does the light just go out and that's that-the million-year nap? Or will some part of my personality, my me-ness, persist? What will that feel like? What will I do all day? Is there a place to plug in my laptop?

There are people who would love to spend their last ten years, or five years, or whatever it is, on the surface of Mars.

I've read plenty of amazing science pieces where the writers don't hang out in labs. I just have fun doing it. And I get rewarded for it; I get gushy, especially when kids tell me they expected to be bored by my books, but weren't.

The nobility of the human spirit grows harder for me to believe in. War, zealotry, greed, malls, narcissism. I see a backhanded nobility in excessive, impractical outlays of cash prompted by nothing loftier than a species joining hands and saying “I bet we can do this.” Yes, the money could be better spent on Earth. But would it? Since when has money saved by government red-lining been spent on education and cancer research? It is always squandered. Let’s squander some on Mars. Let’s go out and play.

I very much was inspired by Bill Bryson. He does cover science, but more often, it's a mixture of science and travel, and whatever he happens to be writing about - Shakespeare, Australia, the United Kingdom, or when he covers science in 'A Short History Of Nearly Everything' - he has an incredible ability to be both entertaining and enlightening.