Any day we create that much shrapnel is a good day.

From our point of view, we're just curious, we're poking around and having fun. If it's science, if it's accurate, if it's not accurate, we did the best we can to keep things clean and understandable, but we're just having fun, so sue us if we got something wrong.

If it turns out that we're doing proper science from time to time, it just happens to be that that's the most efficient way of doing it. We go into each of these stories with an open mind, and one of the great things about how the show works is that we're not approaching it from a doctoral point of view, we're just trying to see what happens.

I think LEGOs are one of the best toys ever developed. While LEGOs are sold in kits in order to build specific things, there [are] very few people who leave their LEGOs in those kits. It very rapidly becomes an open system where you can build whatever you want. That's the one thing that signifies my entire life and my career. I learned at an early age that I could make the things that I wanted. That's a very powerful thing to realize as a kid. LEGOs were a key part of that.

Science isn't just for scientists and guys in lab coats. It's something that everybody can do.

We've found that the biggest thing as far as the danger is simply pressure.When we work with explosives, we've got bomb technicians there, bomb-squad guys who go into unknown situations all the time, and they've dealt with it safely.

There are a lot of things that I'd do differently. But I can't imagine being more fortunate than I have been.