I had never heard the term "social entrepreneur" until this morning when I was reading the newest issue of CSRWire. Don't know if I was just not paying attention before (hey--it happens!) or this was really the first time I have read the term.
According to Ashoka, a social entrepreneur is a person with an innovative solution to society's most pressing social problems. They act as change agents for society. One of the interests areas is the environment and on that page, there is a discussion of changing economic incentives. There was a program on KCCU this morning on this approach to climate change--to make renewable energy a better economic value that other forms of energy, such as coal. It was interesting, although I can of course, not find a link to the story on the NPR Facebook page (usually I can.)