NEWCASTLE UPON TYNE, England, April 12 -- Northumbria University issued the following news release: * * * New study reveals Arabia's 'green past' over the last 8 million years A new study has revealed that one of the driest areas on Earth - the Saharo-Arabian Desert - enjoyed periods of green, humid weather over the last 8 million years. The findings, which are published in Nature today, Wednesday 09 April, offer a groundbreaking insight into the hydroclimate of this now dry, arid region. W  more