We have six-and-a-half-billion people on the planet, going rapidly towards seven. We're going to need a lot of inventiveness about how we use water and grow crops.

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

We need to continue to decrease the growth rate of the global population; the planet can't support many more people.

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

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.

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