The return of private supersonic flight

Since the demise of the Concorde, there has been no private or commercial air travel at supersonic speeds. Now, however, Gulfstream, SAI/Lockheed Martin, and Aerion are working on developing technology that, through specially designed aircraft body shapes, can reduce the "sonic boom" and allow private jets to take flight paths that the Concorde was unable to use. There's more on this subject at The Economist (free audio interview; the print article is premium content).