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More than 5,500 silver coins buried by a river about 1,800 years ago are now in the hands of archaeologists, following the hoard's discovery in Augsburg, Germany.At the time of the coins' burial, the Roman Empire was in full swing, with its coinage reaching all corners of its territory and beyond.These coins "are denarii, the standard silver denomination during the 1st-early 3rd century [A.D.]," Stefan Krmnicek, a professor of ancient numismatics (the study of coins) at the University of Tübingen in Germany, told Live Science in an email.Archaeologists found the hoard earlier this year in an old riverbed. But though...

For a long time, scientists had assumed a gradual expansion of African people through Sinai into both Europe and Asia. Then, bizarrely, it became clear from both genetics and archaeology that Europe was peopled later (after 40,000 years ago) than Australia (before 50,000 years ago). Meanwhile, the geneticists were beginning to insist that many Africans and all non-Africans shared closely related DNA sequences that originated only after about 70,000-60,000 years ago in Africa. So a new idea was born, sometimes called the "beachcomber express," in which the first ex-Africans were seashore dwellers who spread rapidly around the coast of the...