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.

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

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.

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

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.

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

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