Visitors walk through the Hachette Book Group's exhibition in May at BookExpo America, the annual industry convention in New York.
Mark Lennihan/AP
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David Quammen's new book is an extended excerpt of his previous one, Spillover, which explored how dangerous pathogens jump from animals to people.
Courtesy of David Quammen
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Former President George W. Bush (right) and his father, former President George H.W. Bush, wave as they leave a family wedding in Washington, D.C., in May 2006.
Normand Blouin-Pool/Getty Images
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