DNA Lights  In the last ten years, countless personal genomics
companies have popped up. From 23andMe to Family Tree DNA to
Ancestry.com, these services mostly focus on health markers and
genealogy. Undoubtedly, those are excellent uses for genetic
testing but that isn’t the complete story of the human genome.
Inside the cells of every human being lies the key to
understanding our shared history as a species. As it turns out,
we can use our genes to help track every major migration that
humanity has ever experienced.  Dr. Spencer Wells and his team
at the Genographic Project are taking it upon themselves to test
hundreds of thousands of people from all over the globe to help
garner a better understanding of human populations and
migrations. Traditional and indigenous populations from all over
the globe have been DNA tested, and currently anyone interested
can buy a personal test for $200.  Dr. Wells was kind enough to
sit down for a phone interview this week. I spoke to the world-
renown geneticist and the fac