Green products and services, renewable energy, and environmental conservation--three job zones not always easy to define, but set to take off as savvy cities move step by step toward an economy less based on fossil fuels and more connected to the wind, the waves, the sun. Twin Cities innovators in technology and business are busy creating parts of the mosaic--a green roof, an LEED-certified office building or factory, a new system to handle waste, a product created with a minimal carbon footprint--that will one day add up to a new image of what it means to live, work, and do business on earth. In the process they are creating new ways for people to make a living that enhances life on the planet.