The closer the genetic relationship of the family members, as for example father-to-son, as opposed to uncle-to-nephew, the higher the degree of cooperation.

We are not afraid of predators, we're transfixed by them, prone to weave stories and fables and chatter endlessly about them, because fascination creates preparedness, and preparedness, survival. In a deeply tribal way, we love our monsters.

The human juggernaut is permanently eroding Earth's ancient biosphere.

Every kid has a bug period, I like to say, and I just got so fascinated and I had that experience, that wonderful life of being able to go out on my own without really any supervision at all. I just lucked out that way. I was trusted as a kid.

If enough species are extinguished, will the ecosystems collapse, and will the extinction of most other species follow soon afterward? The only answer anyone can give is: possibly. By the time we find out, however, it might be too late. One planet, one experiment.

Destroying rainforest for economic gain is like burning a Renaissance painting to cook a meal.

This is the assembly of life that took a billion years to evolve. It has eaten the storms - folded them into its genes - and created the world that created us. It holds the world steady.