Two weeks ago we started this feature of interviews with leading scientists and thinkers on the subject of energy. The first interview was with Dennis M. Bushnell, Chief Scientist, NASA, Langley Research Center.   This is the second of what will be an ongoing series of interviews in the weeks ahead.  Regular readers of this blog know that I believe that facing and solving the multiple issues concerning energy is the single most pressing problem that we face as a species.  There is a lot of media coverage about energy, alternative energy and global warming, …