evolution   39242

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Evolution and the psychology of intergroup conflict: the male warrior hypothesis
human intergroup violence - what may be the adaptive benefits of joining aggressive coalitions, particularly for human males
human  evolution  warfare  raiding 
yesterday by fbaymzter
Early Humans Probably Didn't Evolve from a Single Population in Africa
In a new commentary published online on Wednesday (July 11) in the journal Trends in Ecology & Evolution, an interdisciplinary group that includes geneticists, bioanthropologists, and archaeologists argues that we didn't evolve from a single population in a single region of Africa, but rather from separate populations across Africa that fully mixed only much later
human  evolution 
2 days ago by fbaymzter
African Multiregionalism: the New Story of Humanity's Origins
Several new discoveries suggest that our species didn’t arise from a single point in space. Instead, the entire continent was our cradle.
evolution 
2 days ago by carlesbellver
10 years of the App Store: The design evolution of the earliest apps | 9to5Mac

Few contemporary innovations have changed how we live our lives and interact with the world around us more than iPhone apps. The creators of the first 500 available at launch had the unique opportunity of shaping the design direction and interaction methods of the millions of apps created since.

To celebrate the App Store’s 10th anniversary, let’s study the visual evolution of 10 original App Store apps.
design  software  ios  evolution  history 
3 days ago by jefframnani
African Multiregionalism: The New Story of Human Origins
Yes, we evolved from ancestral hominids in Africa, but we did it in a complicated fashion—one that involves the entire continent.

Consider the ancient human fossils from a Moroccan cave called Jebel Irhoud, which were described just last year. These 315,000-year-old bones are the oldest known fossils of Homo sapiens. They not only pushed back the proposed dawn of our species, but they added northwest Africa to the list of possible origin sites. They also had an odd combination of features, combining the flat faces of modern humans with the elongated skulls of ancient species like Homo erectus. From the front, they could have passed for us; from the side, they would have stood out.

Fossils from all over Africa have modern and ancient traits in varied combinations, including the 260,000-year-old Florisbad skull from South Africa; the 195,000-year-old remains from Omo Kibish in Ethiopia; and the 160,000-year-old Herto skull, also from Ethiopia. Some scientists have argued that these remains represent different subspecies of Homo sapiens, or different species altogether.

But perhaps they really were all Homo sapiens, and our species simply used to be far more diverse than we currently are. “If you look at skulls, you’ll see different features of modern humans arising in different locations at different times,” says Eleanor Scerri, an archaeologist at the University of Oxford. And the reason for that, she says, is that “we’re a species with multiple African origins.

They’re arguing that Homo sapiens emerged from an ancestral hominid that was itself widespread through Africa, and had already separated into lots of isolated populations. We evolved within these groups, which occasionally mated with each other, and perhaps with other contemporaneous hominids like Homo naledi.

The best metaphor for this isn’t a tree. It’s a braided river—a group of streams that are all part of the same system, but that weave into and out of each other.

There’s one large potential problem with the African multiregionalism story. Genetic studies of today’s African populations suggest that they diverged from one another between 100,000 and 150,000 years ago—far later than the early, continent-wide origin suggested by the bones and tools. That deep and broad origin might be right, “but, it’s not something that we geneticists have formally tested,” says Brenna Henn from UC Davis, who is an author on the new paper. “We have discussed ways of doing that, but there’s no published paper yet saying that there is deep population structure in Africa.”
evolution  anthropology  africa 
4 days ago by campylobacter

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