In 'Packing for Mars,' I tried to convey the importance of getting young people interested in science.

The paper does not provide the exact number of penises eaten by ducks, but the author says there have been enough over the years to prompt the coining of a popular saying: 'I better get home or the ducks will have something to eat.

The human head is of the same approximate size and weight as a roaster chicken. I have never before had occasion to make the comparison, for never before today have I seen a head in a roasting pan.

I dont fear death so much as I fear its prologues: loneliness, decrepitude, pain, debilitation, depression, senility. After a few years of those, I imagine death presents like a holiday at the beach.

Instead, I quietly excused myself and went to the bar, to commune with spirits I know how to relate to.

Viagra does have a physiological effect, but it doesn't make women feel aroused. Nowadays, researchers are looking at drugs that affect the central nervous system rather than blood flow to the genitals.

In my experience, the most staunchly held views are based on ignorance or accepted dogma, not carefully considered accumulations of facts. The more you expose the intricacies and realtities of the situation, the less clear-cut things become.