We have domesticated crops over a very long period of time, like tens of thousands of years. And crops get - seeds get carried. Sometimes, if they're very small seeds, they get scattered off trucks. Pollen travels.

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.

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

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

There are probably already too many people on the planet.

I don't know how you overcome the dearth of scientists in the government positions.

New molecular methods that add or modify genes can protect plants from diseases and pests and improve crops in ways that are both more environmentally benign and beyond the capability of older methods.