"A remarkable account of the kidney and the scientific, medical, and health evolution tied to our understanding of it. The kidney is an extraordinary organ - in many ways the regulator, the metronome, the keeper of the human body's delicate equilibrium. On a given day, minute by minute, it purifies the body of toxins it encounters from diet, climate, activity, and injury. It allows us to be and to move in the world. And yet most of us know so very...