If there are more and more environmental refugees, they are going to end up on your doorstep too.

If everybody switched to organic farming, we couldn't support the earth's current population - maybe half.

In the last century, as we learned more about genes, we were able to devise ways of accelerating evolution.

We are sliding back into a dark era, and there seems little we can do about it. I am profoundly depressed at just how difficult it has become merely to get a realistic conversation started on issues such as climate change or genetically modified organisms.

The more we can grow on already cultivated land, the better.

For me science is not different from art, except in the one small, crucial detail that experiments speak their own truths, not ours.

Jumping genes are fundamental because they're agents of change. Everybody knows that organisms evolve. What makes them evolve is that their genes are dynamic and in motion. A familiar example is the stripe-y corn - called Indian corn - that you buy in the fall.