Team Working (IMAGE) Imperial College London Caption Professor Tina van de Flierdt and Dr Johann Klages work on the sample of ancient soil Credit T. Ronge, Alfred-Wegener-Institut Usage Restrictions None License Licensed content 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.