There's a lot of memorization that goes on in school. You memorize vocabulary words and all these sorts of things.

The atoms of our bodies are traceable to stars that manufactured them in their cores and exploded these enriched ingredients across our galaxy, billions of years ago. For this reason, we are biologically connected to every other living thing in the world. We are chemically connected to all molecules on Earth. And we are atomically connected to all atoms in the universe. We are not figuratively, but literally stardust.

If the Sun exploded, we wouldn't know about it for 8 minutes and 20 seconds. Light and gravity take that long to reach us. Then we would vaporize.

So when I think of, what is the meaning of life, to me, that's not an eternal unanswerable question. To me it is in arms reach of me every day.

This past year, we received our second Emmy nomination for Outstanding Informational Series. While we'd all like to win, I can say with utmost sincerity that it mattered more to me that we got noticed than whether or not we win.

In the end, it's the people who are curious who change the world.

The great tragedy is that they're removing art completely, not because they're putting more science in, but because they can't afford the art teachers or because somebody thinks it's not useful. An enlightened society has all of this going on within it. It's part of what distinguishes what it is to be human from other life forms on Earth - that we have culture.