Can America Get to 100% Renewable Energy by 2050?

This question is debated by two academics in a reasonably articulate and polite manner on this recent “Energy Gang” podcast.  Debates may not in the end be the best way to reach a satisfactory conclusion, but they can be very entertaining when done well.  I found the proponent, Mark Jacobson, to be informed and convincing, but I freely admit a pre-existing bias for his position.  I subscribe to this podcast through itunes and it is consistently informative and interesting.  You may enjoy listening, and I would love to hear what you thought.