Geochemistry (IMAGE) University of Göttingen Caption Geochemistry describes how our planet was formed and has evolved, as well as the processes and systems that transport matter and energy around the Earth. Credit Gerhard Wörner Usage Restrictions None License Original 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.