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Thousands of fossils from the La Brea tar pits in California show no signs of mammals and birds evolving in response to ...
Several key moments in Earth's history help us humans answer the question "How did we get here?" These moments also shed ...
Scientists have documented the way a single gene in the bacterium that causes bubonic plague, Yersinia pestis, allowed it to ...
Life is thought to have begun when RNA began replicating itself, and researchers have got close to achieving this in the lab ...
Scientists have documented the way a single gene in the bacterium that causes bubonic plague, Yersinia pestis, allowed it to survive hundreds of years by adjusting its virulence and the length of time ...