A new technique called “Globetrotter” is allowing researchers to correlate historical events with ancient human DNA, particularly those points in history where distinct human populations bred.
Researchers applied a statistical algorithm to the genome of 1,490 individuals in 95 populations worldwide, identifying 100 points where populations bred over 160 generations during the last four million years.
Though the scientists were able to correlate the data with known historical events, such as Alexander the Great, what is perhaps even more exciting is they pinpointed events where human populations bred that we have no historical record of. One such case is the evidence of the Chinese Tu tribe mixing with a Greek-like European population in 1200 CE.
A genetic map illustrating this research can be found here.