Ancient Magma Reveals Signs of Life (IMAGE) Heidelberg University Caption Opened graphite inclusion in zircon after ion bombardment, image taken with scanning electron microscope Credit Winfried Schwarz – Heidelberg University, Institute of Earth Sciences Usage Restrictions This image may be used only in connection with the contents of this press release, and the source of the image must also be cited. 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.