Note, however, that you cannot simply add temperatures the way you can add volumes or weights. Two people in bed, each with body temperatures of 98.6 degrees Fahrenheit, do not normally create a 197.2 degree under-the-cover oven.

I'm not a scientist, I was not a good science student, I felt effectively alienated from science throughout my young life, and it was only when I became an adult that I began to really appreciate from a completely different angle the power of science.

We still don't know for sure what the trigger was, but since we've discovered meteorites with supernova dust, we do know that a violent explosion rocked our cosmic neighborhood at the time of our birth, and it's quite possible that without it, our stable, stately solar system would never exist at all.

In America, there are people who don't read science fiction but still think about tomorrow, so it's not only the force of science-fiction that makes you a tomorrow thinker.

No one wants to die, and no one wants to die poor. These are the two fundamental truths that transcend culture, they transcend politics, they transcend economic cycles.

One of the things that fascinates me most is when people are so charmed by the universe that it becomes part of their artistic output.

I dream of a world where the truth is what shapes people's politics, rather than politics shaping what people think is true.