Despite our very recent appearance on the planet, humanity combines arrogance with increasing material demands, even as we become more numerous. Our toughness is a delusion. Have we the intelligence and discipline to vigilantly guard against our tendency to grow without limit?

My work more than didn't fit in. It crossed willy-nilly the boundaries that people had spent their lives building up. It hits some 30 subfields of biology, even geology.

People think the earth is going to die and they have to save it. That's ridiculous. If you rid the earth of flowering plants, people would die, period. But the earth was without flowering plants for almost all of its history.

There is no scientific reason to think that we, even with space travel, are going to survive as a species for ever, certainly not by biting off the hand that feeds us, which is exactly what we are doing.

The life force knows exactly what it takes to keep any particular living organism - any organism - alive. Anything in manifestation, for that matter. Even a rock is a manifestation of some sort, and you know, in physics and quantum physics, they know a rock is not dead.

I'm thrilled to be working with the Science Channel. A chance to shine a light on the wonder and exciting possibilities of science with such a smart and talented team is a dream come true for me. It's very gratifying to me personally, and it's also a way to honor my family.

Man, in the collective sense, is the hero of science. Man, in the collective sense, is the hero of Earth.

There were probably, what, 300 science-fiction members in the SFWA, of whom probably a hundred were active members in the sense that they were selling something every year, or every couple years.