Science News Flash
4.4 Billion-Year-Old Crystal Discovered
You might have seen:
BBC News, Crystal Is "Oldest Scrap of Earth Crust"; http://www.bbc.co.uk/news/science-environment-26324968
You might have seen:
BBC News, Crystal Is "Oldest Scrap of Earth Crust"; http://www.bbc.co.uk/news/science-environment-26324968