Global Family Reunion Project May Highlight How Connected We Really Are

AJ Jacobs is taking "six degrees of Kevin Bacon" to a whole new level.
2:08 | 06/16/15

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Transcript for Global Family Reunion Project May Highlight How Connected We Really Are
We are back now with one man's mission to show that all of us are tied together. Creating a family tree with branches all over the world throwing a global family reunion. Sara Haines has the story. ? Reporter: Welcome to one of the world's biggest family reunions. Throwing a party for the entire world. Reporter: Meet A.J. Jacobs bringing the game six des of Kevin bacon -- I was in a movie with an extra Eunice whose hairdres hairdresser -- Reporter: To life and stretching the definition of family to remind us somehow we're all connected. Hi, I'm Daniel Radcliff. We're all cousins. I'm Seth rogen and I'm your cousin. Reporter: What is your relationship to president Obama? Oh, I do know that one. He is my fifth great aunt's husband's brother's wife's seventh great nephew. Reporter: So you're tight. Oh, yeah. Hmm. What if I were related to royalty like prince harry? Maybe George and Amal Clooney are my long lost cousins. Tiny family tree. Oh, wait. Now my family tree is huge! You know that guy way up there. It's George. Yep. I'm his wife's eighth grapts aunt's husband's fifth great nephew's wife's fifth great niece. Talk about keeping it in the "Gma" family. Start tracing your family here with genealogy web sighs Ike ancestry.com, family search and genie. In the end it was time to dance it out with my soul sister, the sisters sledge clan and the their '70s megahit ? we are family yeah yeah ? ? I got all my sisters with me ? ? we are family ? ? get up everybody and sing ? Reporter: For "Good morning America," Sara Haines, ABC news, New York.

This transcript has been automatically generated and may not be 100% accurate.

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