NOVA spoke with him on the eve of the 50th anniversary of the breaking of the sound barrier. NOVA: How early on did the Americans get involved in pursuing high-speed flight? HALLION: The American ...

Bootstrap Business explains how much noise a sound barrier can really block. What to know about barriers blocking sounds on ...

Written with all of the fierce intelligence and passion for truth that millions have come to expect from Amy Goodman’s reportage, Breaking the Sound Barrier is, in Arianna Huffington’s words ...

A "son of Concorde" aircraft that may one day fly from New York to London in 1.5 hours has reached supersonic speeds. An incredible image shows Boom Supersonic's XB-1 jet breaking the sound barrier.