We humans have tried to dominate this planet and the earth has served as the basis for the material wealth enjoyed by many in the developed world. As our population has grown dramatically over the past hundred years, the planet’s ability to handle all of our needs has come under stress. I firmly believe that with ingenuity, technology, management and care, we can develop a renewable resource-based economy that can provide for all of us without destroying the planet. But a sustainable economy requires that we recognize our impact on the planet and learn to manage that impact. That requires science, engineering, management and a willingness to deal with reality.