In many places in the developed world, we eat or waste probably twice as many food calories as we really need. We're wasteful of food. We ship all over the world. We're now realizing that generating the energy to ship the food around the world is also ruining our climate.

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

Civilization depends on our expanding ability to produce food efficiently, which has markedly accelerated thanks to science and technology.

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

We wouldn't think of going to our doctor and saying 'Treat me the way doctors treated people in the 19th Century', and yet that's what we're demanding in food production.

We've gotten so good at growing food that we've gone, in a few generations, from nearly half of Americans living on farms to 2 percent. We no longer think about how the wonderful things in the grocery store got there, and we'd like to go back to what we think is a more natural way.

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