"The awe-inspiring story of the elements that make up the human body, and how these building blocks of life traveled billions of miles across billions of years to make us who we are."-- Every one of us contains a billion times more atoms than there are gains of sand in the Earth's deserts. How did these elements combine to make us human? Levitt shares the awe-inspiring story of the elements that make up the human body, and how these building blocks...