Color of the world's lakes (IMAGE) American Geophysical Union Caption The new study presents the most extensive map of lake color, revealing that most of the world’s lakes are already green-brown rather than blue. Credit AGU/Geophysical Research Letters 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.