The subtle art of listening, allegedly the keystone of successful marriages, has a defensive role in the chaos of war, too. A Dutch firm is shopping to world militaries a tiny device that listens for screams, gunshots, mortars and even warplanes. It doesn't listen in the conventional sense, but instead measures the 3D movement of individual air particles in order to determine the x, y and z coordinates of whatever made the noise in question. [Read more...]
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