Space/Science
http://news.theage.com.au/humans-lived-in-tiny-separate-bands-for-100000-years/20080425-28kq.html Some fascinating scenarios here of "re-unions" of populations separated for 100,000 years. Shades of the Neanderthal-Cromagnon interactions that probably didn't happen (or didn't survive) but these DID, and contribute to who and what we are today...
