New discovery in Western Australia sheds new light on earth’s history

Following on from my last post on the theme of ‘world’s oldest natural wonders’ with the discovery of the oldest known fragment of the earth’s crust. The crystal – a zircon – was found in Western Australia and  is estimated to be 4.4 billion years old, raising the possibility that the Earth might have been able to support life earlier than previously thought – to read the full story click here