Why don't the politicians tell us specifically what those "green jobs" are?

I was wondering if anyone over at NR can tell me just what in the world a "green job" is? I have heard that many would be created, but there is never an example. The types of jobs I envision are more of a government-funded boondoggle paying someone too much money to pick up roadside trash. Would picking recyclables out of a trash heaps or wiping solar panels down with a sponge be some of the jobs that Americans won't do? I suppose that the notoriously unreliable windmills require a lot of maintenance — so that might be a skilled profession that would pay well. Perhaps most jobs will consist of folks sitting in government offices ensuring compliance with regulations or managing DMV style lines of customers waiting to purchase their monthly ration of carbon credits.