What proteins in prehistoric teeth reveal about Stone Age sex between early human species - CNN

What proteins in prehistoric teeth reveal about Stone Age sex between early human species    CNN Protein reveals the oldest episode of sex and procreation among human species    EL PAÍS English Enamel proteins from six Homo erectus specimens across China    Nature 400,000-year-old Homo erectus proteins reveal genetic links to Denisovans and modern humans    Archaeology News Online Magazine Ancient teeth hint at canoodling between early human relatives    AP News

Original source: Google News AE