Lake Mendota sunset (IMAGE) University of Texas at Austin Caption The team analyzed genetic material from microbes in a one-of-a-kind archive of water samples collected over 20 years from Lake Mendota in Wisconsin. Credit Robin Rohwer/University of Texas at Austin. 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.