Oceans cover 71% of our Earth. Formed over 3.8 billion years ago, these vast depths could hold some of the answers to our questions about Earth’s long and mysterious history, as well as offer predictions for the future of our planet. And the key might be found in, of all places, rocks.

On this episode of Access to Excellence, President Washington speaks with Geoffrey Gilleaudeau, associate professor in the Department of Atmospheric, Oceanic, and Earth Sciences Department in the College of Science, about the past, present, and future of Earth’s oceans according to the physical and chemical characteristics of sedimentary rocks.

For this special "Best Of" episode, we've compiled some of our most thought-provoking and compelling conversations between President Washington and our accomplished faculty. We'll revisit discussions that are more relevant than ever—from the vast mysteries of the cosmos to the hidden power of coffee grounds—to see how George Mason is blazing a path of innovation to develop bold solutions for our world's grand challenges.

One small bite from a deer tick can lead to debilitating symptoms and a lifelong battle with Lyme disease. At George Mason University, researchers are developing innovative diagnostic technologies that are changing the landscape of Lyme disease detection. In this episode of the Access to Excellence podcast, George Mason President Gregory Washington speaks with Alessandra Luchini, professor in the School of Systems Biology in the College of Science, about the development of cancer and Lyme disease detection technologies, and the importance of international collaboration in scientific progress.