We live in uncertain times when it comes to the future of life on Earth.

It's the best - combining the mediums of television, documentary, and books, to give you this transmedia experience for kids, for families, and for teachers.

Our health as a society, our robustness as a community, as a nation, as a people, is not only dependent upon fiscal stability, military might, political strength - it's also dependent on a healthy planet.

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

We know that when push comes to shove, [we can] drive ourselves to save our planet.

We live in a time where we have more extinction happening on our planet than since the dinosaurs were wiped out 50 million years ago.

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