Generally, as people age, the rate of mortality increases. Yet there’s one period, the timeframe between a child’s first day of life and age 5, when mortality tends to decrease as the child gets older.
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New study marries genetics, archaeology and suggests groups in ancient Africa traveled, swapped goods, ideas . Between 80,000 and 50,000 years ago, people across early eastern and southern Africa left behind traces of an explosion of symbolic expression reflected in far more intensive
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