What is a "Green" industry or occupation?

What is a "Green" industry or occupation? There are many aspects of work that could be considered green, such as new materials, methods, products, and services. However, we do not yet have a common language capturing the broad and varied nature of green industries and jobs. Several states and many local organizations are working collaboratively to better understand and promote the effects of clean and green technology on our economy. Following is a collection of information from those efforts.