Professor Elfatih Eltahir has been elected a Fellow of the American Geophysical Union, an honor granted every year to only 0.1 percent of AGU’s 50,000 members. Fellows are elected based on their acknowledged eminence in the Earth and space sciences, and their contributions to the scientific community and the advancement of the public’s understanding. In his research, Eltahir seeks to advance understanding of the fundamental hydrological processes and mechanisms that govern the role of the biosphere as characterized by vegetative cover and soil moisture conditions, in the dynamics of biosphere-atmosphere interactions, and the associated water cycle at regional scales. Specifically, his work looks at the impact of deforestation and desertification on regional water resources, the predictability of regional-scale droughts and floods, and the regional impacts of global change on water resources, agriculture and ecosystems.