A mile or more below the surface of the ocean, microbes dominate the deep sea life. In this seminar, Dr. Julie Huber describes her research to better understand the microbial ecosystem in the rocky crust below the ocean floor. She begins the series by describing how reactions between seawater and the elements in ocean rocks enable chemosynthetic ecosystems to exist in the deep sea. She then introduces us to the tools scientists use to study microbial deep sea life below the ocean floor.