By Kristen V. Brown for Gizmodo—Liza Lizarraga has spent hours combing through paper and digital archives to track her family’s history the old-fashioned way, and she has spit in a test tube to find out what morsels of her family’s history might be revealed by her DNA. In September, though, Lizarraga will walk the same … Continue reading Genealogy Tourism Is Booming as Americans Search for Identity in DNA and Abroad