Mongolian Herders (image) Oregon State University Caption Sheep and goats graze on grasslands in Mongolia that are so degraded they are making a transition to desert. In the foreground is an ovoo, a religious worship site often visited by travelers. Credit (Photo courtesy of Oregon State University) Usage Restrictions None 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.