If I had to guess, he's probably making money indirectly off of speaking engagements and environmental work he has published. Being that he's one of the current faces of the American environmental movement and an ex-VP, I'm sure he gets paid handsomely to speak for different events, especially with the attention environmental matters are getting these days.

Who's making the money? Well, there's a big push these days to find cleaner ways to make the energy we need to sustain our standard of living. Like any other industry, a lot of people can get rich if they get in on the ground floor. Investors in green energy, entrepreneurs, and engineers can all make a nice buck off of the push toward green power. Even communities can benefit, if jobs in green energy come to their region.

he said all his profits go right back into more eniviromental issues

To quote Chip Giller

So-called “global warming” is just a secret ploy by wacko tree-huggers to make America energy independent, clean our air and water, improve the fuel efficiency of our vehicles, kick-start 21st-century industries, and make our cities safer and more liveable.

Don’t let them get away with it!