Why does the universe go to all the bother of existing?

A zero-gravity flight is a first step toward space travel.

Although September 11 was horrible, it didn't threaten the survival of the human race, like nuclear weapons do.

I used to think information was destroyed in black hole. This was my biggest blunder, or at least my biggest blunder in science.

There is a fundamental difference between religion, which is based on authority, [and] science, which is based on observation and reason. Science will win because it works.

Scientific discovery may not be better than sex, but the satisfaction lasts longer.

Real science can be far stranger than science fiction and much more satisfying.