The earliest blacksmiths may have been bacteria
Thursday, October 16, 2008 - 14:35
in Paleontology & Archaeology
(PhysOrg.com) -- Talk about a Cold Case. This mystery goes back to when there was no oxygen on the planet and bacteria were the most sophisticated life form. But Kurt Konhauser holds a clue to answering some ancient questions. It's a 2.8 billion-year-old piece of rock.