Listening across millennia, a cultural historian explores the process by which noise today has become as powerfully metaphorical--and intriguing--as the original Babel. When did the "silent deeps" become cacophonous and galaxies begin to swim in a sea of cosmic noise? Why do we think that noises have colors and that colors can be loud? How loud is too loud, and says who? Attending, as ears do, to a surround of sounds at once physical...