Complex sentence: Noah S. Diffenbaugh is an American geoscientist and Professor of Earth System Science at Stanford University, where he is also a Kimmelman Family Senior Fellow and the faculty moderator for the undergraduate-oriented Three Books Program.
Split into simpler sentences: Noah S. Diffenbaugh is an American geoscientist and Professor of Earth System Science at Stanford University, where he is also a Kimmelman Family Senior Fellow. He is also the faculty moderator for Stanford's undergraduate-oriented Three Books Program.