It's All Relative: Adventures Up and Down the World's Family Tree

#1 New York Times bestselling author A.J. Jacobs undergoes a hilarious, poignant quest to understand what constitutes family—where it begins and how far it goes—in It’s All Relative, a “thought-provoking…delightful, easy-to-read, informative book” (Kirkus Reviews, starred review).

A.J. Jacobs has received some strange emails over the years, but this note was perhaps the strangest: “You don’t know me, but I’m your eighth cousin. And we have over 80,000 relatives of yours in our database.”

Tha...