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Early tool-maker fossil should ‘rewrite’ history: study

She swung in the trees like a chimp but had long dexterous fingers for tool-making and hybrid feet for walking upright, a major study Thursday on the ancient hominid Australopithecus sediba suggested. Until now, the first tool-maker was widely believed to be Homo habilis, based on a set of 21…

Study: Boys are reaching sexual maturity earlier, social maturity later

A new study has concluded that the age of sexual maturity in boys has been steadily decreasing in Europe since the mid-18th century. A similar trend among girls had previously been determined on the basis of medical records related to the onset of menstruation, but it has been harder to…