On the Ethiopian Plateau (image) University of Utah Caption Nahid and Royhan Gani, geologists at the University of Utah's Energy and Geoscience Institute, stand on the Ethiopian Plateau near the Gorge of the Nile, which was carved by Africa's Blue Nile River. The Ganis are studied the timing of the canyon's incision to learn more about how movements of Earth's crust are related to human evolution. Credit Solomon Gera, Ethiopian Geological Survey 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.