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China's Earliest Modern Human Found
The remains of one of the earliest modern humans to inhabit eastern Asia have been unearthed in China. The find could shed light on how our ancestors colonized the East. Researchers found 34 bone fragments belonging to a single individual at the Tianyuan Cave, near Beijing.
Evolutionary adaptions to different environments combined with random mutations in isolated communities perhaps?
The surest sign that intelligent life exists elsewhere in the universe is that none of it has tried to contact us.
AIUI (I'm not an evolutionary biologist, although my girlfriend is) the environmental pressures which gave rise to homo sapiens in Africa also occurred among simian populations elsewhere, so that human-like characteristics arose independently among multiple populations (h. neanderthalis in Europe, for example). Through interbreeding and competition, there's now a single species, h. sapiens sapiens. Although some of the characteristics of our species are apparently or allegedly tracable to interbreeding events, for instance I've heard that red/ginger hair among Europeans can be linked to Neanderthalis genes.
"has a very high likelihood of being a forgery"
Don't be an idiot - that would mean being found for sale on a dirty blanket laid out on a sidewalk outside the Lohou train station in Shenzhen. The Tianyuan Cave is a carefully protected area, listed on UNESCO's World Heritage List, and monitored specifically to prohibit such funny business.
the article goes on about "archaic" groups of humans who the humans coming from out of Africa met up with and made love to without ever explaining who or what these archaic groups were and how they had got where they were.
Evidence suggests that early hominids migrated out of Africa in waves. Homo erectus, for example, is believed to have evolved in Africa and spread over much of Asia one or two million years ago. The general pattern of hominid evolution is one of evolution of new species in Africa followed by general dispersion over those parts of the globe accessible by foot. This pattern appears to have been repeated several times: H. erectus, H. heidelbergensis/neanderthalensis[1] and H. sapiens.
The reality of hominid evolution is that we don't know a lot. The number of fossils is small and the weight of inference they bear is heavy. As Mark Twain said, in science one gets such a huge return in speculation from such a trifling investment of fact. However, the DNA evidence points quite strongly to the evolution of modern humans in Africa about two hundred thousand years ago, and the migration across the rest of the Old World about 70,000 years ago, with the settling of Australia by perfectly ordinary H. sapiens who are just like all the rest of us about 40,000 years ago. North America was colonized somewhat later, but probably not that much.
Humans are much bigger on exogamy than any other primate: we have a strong tendency to breed outside our kin group. We'll have sex with just about anything, and actually show a marked preference for those who are not perceived to be close kin. This is why the differences between races are so tiny, and restricted entirely to rapidly evolved and quite trivial enzymic variations that have high survival value in different climates. We are all multi-racial under the skin, and all have ancestors of different races far more recently in our family tree than most people appreciate (Icelanders may be exempt from this rule.)
So on the face of it, if there were multiple waves of near-modern humans migrating across the Old World, it is very likely that the members of the most recent group would have interbred with previous groups.
[1] For the racists in the audience, it might be worth contemplating that Neanderthals are the only hominid species that appears to have evolved in Europe (from H. heidelbergensis that left Africa earlier) and of all the hominids they are amongst the least successful.
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