I think a human animal is far more wild and unpredictable and dangerous and destructive than any other animal.

I'm a biologist. At my core, I'm a naturalist.

The challenge is that we live in a time where there's a lot of crap on television.

To be with another scientist and make a discovery and share that with a global audience, or working with bear biologists in Alaska, by helicopter - [it's] really what I've given my whole life to. And I get to do that just about every week.

I'm really worried about what the world is going to be like when my daughters are young women, [when] they are young leaders or mothers or businesspeople - whatever they're going to be. I'm afraid they're going to have a less healthy and less biologically rich planet.

Today, I’m a conservationist because I believe that my species doesn’t have the right or option to determine the fate of other species, even ones that inspire fear in us.

What drives me is that moment of discovery. I love the unknown.