Digging for Soil Samples (IMAGE) University of California - Riverside Caption Bioinformatics specialist Keshav Arogyaswamy digging toward bedrock to sample deep soil microbes in California's southern Sierra Nevada. Credit (Emma Aronson/UCR) 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.