I'm glad I'm inspiring somebody.

I think the hardest part about my job is the best part of my job - the travel.

Many scientists would argue that we are now in what is called Extinction, and it's caused by this perfect extinction storm: climate change, habitat loss, pollution, unsustainable exploitation of species and habitat resources, and of course, human population explosion. All of these factors work together and conspire to drive a species to extinction on our planet, every half an hour.

Running is my addiction. It's always present. I'm constantly thinking about my next run.

Many of the medicines we use today, to fight everything from AIDS to cancer, originate as a toxin in an amphibian skin. When we lose these animals, we lose resources. We lose keystone species in the environments where they live.

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

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