I've always felt that specialization is best left to the insects.

In temperate zones, winter is the best insecticide; it keeps the bugs in check. The tropics enjoy no such respite, so plants there have developed a wide range of alkaloids that kill off nosy insects and animals.

The moon's closeness is a huge advantage: To make it habitable, we would first have to bombard it with water-ice comets, a tricky endeavor best attempted with the many resources waiting on and near Earth.

Reared in rural southern Alabama, we enjoyed an idyllic Huck Finn boyhood. But education there was casual at best. Our mother and father were high school teachers and challenged the pervasive easy-going ignorance.

Because I've been a full professor doing research and lecturing at the University of California, I didn't have a lot of time to write, so I have always used my unconscious a great deal to do the really heavy lifting.

In science fiction, basic doubts featured prominently in the worlds of Philip K. Dick. I knew Phil for 25 years, and he was always getting onto me, a scientist. He was a great fan of quantum uncertainty, epistemology in science, the lot.