Traces the author's three-year investigation into what constitutes family, describing how, after receiving an e-mail from a stranger who claimed to be a distant cousin, he embarked on an effort to build the biggest family tree in history.

Traces the author's three-year investigation into what constitutes family, describing how, after receiving an e-mail from a stranger who claimed to be a distant cousin, he embarked on an effort to build the biggest family tree in history.

Traces the author's three-year investigation into what constitutes family, describing how, after receiving an e-mail from a stranger who claimed to be a distant cousin, he embarked on an effort to build the biggest family tree in history.

The New York Times bestselling author of The Know-It-All; and The Year of Living Biblically, A.J. Jacobs undergoes a hilarious, heartfelt quest to understand what constitutes family, where it begins, and how far it goes, and attempts to untangle the true meaning of the family of humankind.