A television advertisement must illustrate the scientific method to substantiate any claim.... That is why stains are lifted, ring-around-the-collar is removed, paper towels become soaked, excess stomach acid is absorbed, and headaches go away-all during the commercial.

Today, in this, the 21st century, bedtime doesn't matter at all. All that matters is what you set for your DVR.

We are star dust in the highest exalted way, called by the universe, reaching out to the universe

Do you realize that if you fall into a black hole, you will see the entire future of the Universe unfold in front of you in a matter of moments and you will emerge into another space-time created by the singularity of the black hole you just fell into?

Pretending to know everything closes the door to finding out what's really there.

No matter what eyewitness testimony is in the court of law, it is the lowest form of evidence in the court of science.

Darwin's theory of evolution is a framework by which we understand the diversity of life on Earth. But there is no equation sitting there in Darwin's 'Origin of Species' that you apply and say, 'What is this species going to look like in 100 years or 1,000 years?' Biology isn't there yet with that kind of predictive precision.