"The most unbelievable factoid along this line I have ever heard is that one out of every six people is related to Genghis Khan" -- You might want to watch the below documentary. It's been awhile since I watched it, but I thought there was some mention of Genghis Khan. JOURNEY OF MAN tells the remarkable story of the human journey out of Africa and into the rest of the world, tracing history through evidence uncovered in the Y-chromosome of man's DNA. Traversing six continents, the film takes viewers on a fascinating journey into the hidden world of their ancestry and offers a modern look at our ancestor's lives. http://www.amazon.com/Journey-Man-Dr-Spencer-Wells/dp/B0000AYL48/ref=sr_1_2?ie=UTF8&s=dvd&qid=1274890940&sr=8-2 A short article: http://news.nationalgeographic.com/news/2002/12/1212_021213_journeyofman.html I had relatives participate in Spencer Wells's National Geographic Human Genome Project and I can confirm that they got the migration routes correct for my family members (at least to the point where I knew they came from, but they took it all the way to Africa). I guess we are all Ethiopians. :) https://genographic.nationalgeographic.com/genographic/index.html