I was always fascinated by engineering. Maybe it was an attempt maybe to get my father's respect or interest, or maybe it was just a genetic love of technology, but I was always trying to build things.

We have a great responsibility. Whatever we make will become the truth, the visual reality that a generation will accept.

I'm a curious guy. I can't turn away from an investigative story, when it comes to the forensic analysis. I've done 33 dives, to the titanic wreck site. I've spent over 50 hours piloting robotic vehicles at that wreck trying to piece together what happened during the disaster. How the ship broke up, comparing the historical record with the forensic record. Documentaries are kind of my new life. I love documentary filmmaking.

The nation that leads in renewable energy will be the nation that leads the world 10, 20 years from now.

Inspiration can hit you in the head at any time in any context. It could happen in a conversation. Talking to someone at a party, you can get an idea. But you've got to remember those inspirations.

Your only competitors are your past achievements.

It's important for me to have hope because that's my job as a parent, to have hope, for my kids, that we're not going to leave them in a world that's in shambles, that's a chaotic place, that's a dangerous place.