Astoria, Queens, New York is the melting pot of melting pots, with a range of skin tones, heights, weights, hair types, and eye shapes, to say nothing of their beliefs, cultures, languages, and trades. But just how different are we? At a street fair in the heart of Astoria, on a sweltering July day, geneticist Spencer Wells and his team take DNA samples from this amazingly diverse group. These samples will show how a selection of New Yorkers: a waitress, a teacher, a councilman, a fashion model, and a mother, among many others, with ethnic origins as diverse as Thai, Puerto Rican and African - are all connected; that they, like everyone else on the planet, can trace their ancestry back to the same small group of Homo sapiens who began eking out a living in Africa less than 200,000 years ago.

Encoded with permission for digital streaming by Infobase on May 18, 2013. Learn360 is distributed by Infobase for Films for the Humanities & Sciences, Cambridge Educational, Meridian Education, and Shopware.

Investigating our Common Ancestry (1:03) -- Genographic Project (4:11) -- Mapping Early Human Migration (2:17) -- Locating Scientific Adam and Eve (3:19) -- Linking Modern and Ancient Humans (3:19) -- Methods for Tracing Human Migration (2:36) -- Homo Sapiens Birthplace (1:16) -- Recognizing Common Roots (2:02) -- First Branch on Human Family Tree (2:00) -- Human Species Crisis (4:40) -- First Migration from Africa (2:51) -- Routes out of Africa (2:02) -- Populating Australia (2:24) -- Migration Motivations (2:01) -- Controversy over Lost Populations in India (3:48) -- Fragile Human Lineages (2:38) -- Asian Ethnic Evolution (2:16) -- Second Migration from Africa (2:59) -- Route Back to Africa (2:00) -- Genetic Origins of Language (4:23) -- Unexpected Genetic Roots (2:55) -- Adapting to Northern Climates (3:30) -- Genetic Factors in Race (3:57) -- Humans Populating Europe (2:28) -- Neanderthal Extinction (5:19) -- Promoting Tolerance through Ancestry (3:46) -- First Americans (4:46) -- Debate on Populating America (3:38) -- Longest Human Journey (2:22) -- Completing the Genographic Project (5:59) -- Proving our Human Family Connections (2:43) -- Credits: The Human Family Tree (0:16).