Adding to that list of dangers, a new study suggests that ocean warming could also accelerate the speed of sound underwater, threatening a fragile balance of noise that many marine species require to ...

The speed of sound is the distance travelled per unit of time by a sound wave as it propagates through an elastic medium. At 20 °C (68 °F), the speed of sound in air is about 343 metres per second ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

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Hey, it's Paul Cavalconte in for Corny O'Connell on this Friday. Question Of The Day breaks the sound barrier, marking the anniversary of the supersonic jet, the Concorde, which launched in 1976. The ...

Sound waves travel at approximately 750 mph at sea level, but slow down at higher altitudes. The speed of sound is called "Mach 1." Supersonic refers to speeds from Mach 1 to Mach 5 (1 to 5 times the ...