Lots of news is out there about green jobs these days. I am working as Executive Director of the Institute for Building Systems. We are training some of those workers... and training people in the standards to make sure the results really are green. But building systems is only one part of the green economy. Transportation, energy, engineering, agriculture... Literally every aspect of our economy will change over the next 20-40 years. So get ready. You can see it as a problem or an opportunity. I see it as an opportunity.
Here is a good description of what these new jobs will be.