Lynn Sherr has brought clarity and insight to many of the most compelling news events of our day—from politics to murder trials to the space program

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Willet soon learns he's been passed the rarest gift of all: a gift that's not supposed to exist

Replaceable You: Adventures in Human Anatomy Format:Hardcover Lynn Sherr has brought clarityThe body is the most complex machine in the world, and the only one for which you cannot get a replacement part from the manufacturer. For centuries, medicine has reached for what's available sculpting noses from brass, borrowing skin from frogs and hearts from pigs, crafting eye parts from jet canopies and breasts from petroleum by products. Today we're attempting to grow body parts from scratch using stem cells and 3D printers. How are we doing? Are