Modern humans arrival in South Asia may have led to demise of indigenous populations
In a major new development in human evolutionary studies, researchers from the University of Cambridge argue that the dispersal of modern humans from Africa to South Asia may have occurred as recently as 70,000 years ago. "Paleoanthropological projects must now be launched in South Asia if we hope to document the spread of our species and if we wish to explain how we became behaviorally modern," writes Michael Petraglia, author of a forthcoming article in Current Anthropology.
The expansion of modern humans into South Asia appears to be part of a complex--at times fatal--story. Once modern humans (Homo sapiens) arrived in regions like India, the researchers argue that they would have met indigenous archaic hominids (such as Homo heidelbergensis). "While the precise explanations for the demise of the archaic populations is not yet obvious, it is abundantly clear that they were driven to extinction, likely owing to competition with modern humans over the long term," Petraglia said.
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In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.
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Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...
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