The philosophy of science is inherent in the process. This is to say, you think critically, you draw a conclusion based on evidence, but we all pursue discovery based on our observations. That's where science starts.

There is no debate in the scientific community...We need [Congress] to change things, not to deny what's happening.

If you have this idea that the earth is only 6,000 years old, you are denying, if you will, everything that you can touch and see. Youre not paying attention to whats happening in the universe around you.

As you may know, I am a mechanical engineer.

For me, the meaning of life is pretty clear: Living things strive to pass their genes into the future.

Science is the best idea humans have ever had. The more people who embrace that idea, the better.

When we see the shadow on our images, are we seeing the time 11 minutes ago on Mars? Or are we seeing the time on Mars as observed from Earth now? It's like time travel problems in science fiction. When is now; when was then?