Electron Microscope Image of Sahara Desert Dust Particle Found in Sediments in Greece (image) University of Toronto Share Print E-Mail Caption This is an electron microscope image of a dust particle rounded by eolian transport. It originated in the Sahara desert and was found in 7.2 million year old sediments in Greece. Credit Photo: Ulf Linnemann, Senckenberg Center for Human Evolution and Palaeoenvironment, University of Tübingen Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.