– Manuscript – Scientists discovered the oldest known DNA and used it to study what life was like 2 million years ago in Greenland. Today, northern Greenland is an empty, cold area. But in the past, it was full of trees, plants, and animals. Kurt Kjær of the University of Copenhagen was the study's lead writer. He said the research “opens the door into a past that has … [Read more...] about Scientists Study Oldest-known DNA