Apparently he is in the top 10 for popularity in Australia personality wise.
He's a great personality on the radio. I don't know if he is as good as Sagan, but for the most part he is a good influence in the science media sector.
I suspect that he thinks he ban be like Owl Gore and help save the world from itself. These bright people seemed to have missed their thermo class. Efficiency is all about using the minimum amount of energy to get the maximum output. If you start diverting funds to make nothing AKA transfering carbon credits around the globe, you are destroying efficiency.