An acoustics professor, a food critic and an audio producer are staring at their devices in a Peruvian restaurant in downtown Washington. “What are you getting?” “Let’s see … it’s fluctuating.” “I ...

Many people think of the ocean as a quiet and serene place: Take a dip underwater and the cacophony of the world melts away. But the ocean is quite noisy, full of whale songs and echolocation, which ...

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Early in 1942, the Army fitted some of its coastal minefields with underwater microphones. Its purpose: to listen for enemy craft, and blow them sky-high by exploding appropriate mines. For a while ...