The Ohio Department of Transportation is replacing a wooden sound barrier along I-75 in Perrysburg with concrete after a high ...

“XB-1 broke the sound barrier three times during its first supersonic ... just below the speed of sound – when traveling over ...

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 properly constructed sound barrier would provide much-needed relief ... Coker also noted that land use trends in Connecticut “have been changing over the last few decades and we are seeing ...

An aircraft developed by Boom Supersonic became the first independently funded jet to break the sound barrier this week ... or would have to slow down over land to limit damage from forceful ...