Ariel Anbar studies the geological, chemical and biological processes that shape the environment of Earth and other planets, and how they have changed through time. Study of these processes teaches us about the habitability of the Earth, the history of the environment and of life, the effects of human activities on the environment, and the prospects for life beyond Earth. An author or co-author of over 100 refereed research publications, Anbar is also an education innovator who has developed a game-like online science course for non-scientists, Habitable Worlds (http://habworlds.org). Anbar earned an A.B. in Geological Sciences and Chemistry at Harvard in 1989, and M.S. and Ph.D. degrees in Geochemistry at Caltech in 1991 and 1996. He was on the faculty of the University of Rochester from 1996 – 2004. Since that time he has been at Arizona State University, where he is a President's Professor in the School of Earth and Space Exploration and the Department of Chemistry and Biochemistry, and a Senior Sustainability Scientist in the Global Institute of Sustainability. He directs the NASA-funded Astrobiology Program at ASU.