Many families participate in the Community Supported Agriculture movement, which allows a family to buy shares in a farmer's produce so that they know where their food is coming from, and they can take their families out and see the farm and meet the farmer. That movement has helped create a new culture around food.

Imagine sitting down to an eight ounce steak, and then, imagine the room filled wit 45 to 50 people with empty bowls...For the feed cost of your steak, each of their bowls could be filled with a cup pf cooked cereal grains.

In the late 1960s, there were alarming predictions that worldwide famine was around the corner. I wondered if humans had already lost the race, overrun the Earth's capacity. I let one question lead to the next, and unearthed information that would forever change my life: Not only is there enough food in the world to feed every man, woman, and child on Earth, there is enough to make us all chubby.

My children threw me a life line: "Return to your roots - food - and rewrite your first book, Diet for a Small Planet." I learned that if I could just show up, in this case, if I could just get myself out of bed, get to the computer in my tiny office at MIT, and start writing, help would start arriving.

When we say we have "hit the limits," we are saying that nature is the problem, when in fact the limits we have hit are the limits of destruction and waste, not nature.

For me, just showing up for the traveling and writing gave me the power to overcome my fear of fear.

If we start with "limits" and a premise of scarcity and fear, it makes us fearful of each other, and that makes us vulnerable to anti-democratic systems.