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

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

Myths about the dire effects of genetically modified foods on health and the environment abound, but they have not held up to scientific scrutiny. And, although many concerns have been expressed about the potential for unexpected consequences, the unexpected effects that have been observed so far have been benign.

Even as the population doubled from three to six billion, we managed to race ahead with all kinds of technological and scientific events in agriculture - from using more fertilizers to mechanization to advanced plant breeding.

Weeds do become resistant to herbicides, and it needs to be managed with multiple herbicides.

The influence of a science adviser is only as good as ears open to that science advice.

There are probably already too many people on the planet.