Don Barrie is a partially retired geology professor at San Diego Mesa College. His life’s work is to make geoscience accessible to general audiences in both academic and non-academic settings. He has led or co-led geoscience-themed trips to Iceland, New Zealand, Namibia, the Grand Canyon, the Eastern Sierra, the Anza-Borrego Desert, and Joshua Tree National Park for various groups. Prior to joining the Mesa faculty as a tenure-track professor in 2004, he taught geology, oceanography, physical geography, and natural disasters at Mesa, Cuyamaca, Grossmont, and MiraCosta colleges, and San Diego State University. As a registered professional geologist and certified engineering geologist, he has managed geologic and environmental field investigations in San Diego, Los Angeles, San Francisco, Arizona, Hawaii, and Guam. He holds a B.S. degree in geology from Cal Poly Humboldt (formerly Humboldt State University) and an M.S. in geology from the New Mexico Institute of Mining and Technology.