Researchers from the University of Copenhagen have succeeded in extracting a complete human genome from a thousands-of-years-old "chewing gum". According to the researchers, it is a new untapped source of ancient DNA.During excavations on Lolland, archaeologists have found a 5,700-year-old type of "chewing gum" made from birch pitch. In a new study, researchers from the University of Copenhagen succeeded in extracting a complete ancient human genome from the pitch.It is the first time that an entire ancient human genome has been extracted from anything other than human bones. The new research results were published in the scientific journal Nature Communications...