Audio Clips of Howard Ochman (AUDIO) University of Texas at Austin Your browser does not support the audio element. Caption Professor Howard Ochman of the University of Texas at Austin reflects on how a team of scientists learned that the bacteria living inside the guts of humans, gorillas and other apes have co-evolved alongside them since they all shared a common ancestor. Credit The University of Texas at Austin 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.