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Are We All Related?

Be Smart

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This is part 3 of our special series on Human Ancestry!
Watch the entire series here ►►
↓↓↓More info and sources below ↓↓↓

In part 3 of our special series on human ancestry, we investigate how closely related we all really are. Basic math tells us that all humans share ancestors. But you’ll be amazed at how recently those shared ancestors lived. Thanks to genetic data in the 21st century, we’re even discovering that we really are all descended from one mother.


Chang, Joseph T. "Recent common ancestors of all presentday individuals." Advances in Applied Probability 31.04 (1999): 10021026.

Jorde, Lynn B. "Genetic variation and human evolution." (2003).

Rohde, Douglas LT. "On the common ancestors of all living humans." (2003)

Rohde, Douglas LT, Steve Olson, and Joseph T. Chang. "Modelling the recent common ancestry of all living humans." Nature 431.7008 (2004): 562566.

Stringer, Chris. “Lone survivors: How we came to be the only humans on earth.” Macmillan, 2012. (Library:

Tattersall, Ian. “Masters of the planet: the search for our human origins.” Macmillan, 2012. (Library:


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It’s Okay To Be Smart is hosted by Joe Hanson, Ph.D.
Director: Joe Nicolosi
Writer: Joe Hanson
Producer/editor/animator: Andrew Matthews
Producer: Stephanie Noone and Amanda Fox

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