Carola Stearns

Carola Stearns is a field geologist and geophysicist with over 40 years of experience enthusiastically sharing her fascination with the Earth and how it works.  She earned a Ph.D at the University of Michigan, has worked in exploration for major oil companies, taught at universities, and maintains a research affiliation with the Kelsey Museum of Archaeology at the University of Michigan.  She has worked with archaeologists on both prehistoric and classical sites around the Mediterranean and in the southwest of the US.  Her diverse research interests include tectonics as well as climatic geomorphology, especially as it relates to human history.  She has lectured as a park ranger at the Grand Canyon, on trips for the UM Alumni Association, and in Ann Arbor training docents for the botanical gardens, arboretum and the public school’s environmental education program.  Currently she works part-time as an interpretive guide in Santa Fe. 

Don Wilson

Don Wilson is Curator Emeritus of Mammals at the Smithsonian's National Museum of Natural History and was named senior scientist in January 2000. Don was director of the Smithsonian's Biodiversity Programs for ten years. A distinguished mammalogist and an internationally recognized authority on bats, he earned his Ph.D. in Biology from the University of New Mexico. He is the author of over 280 scientific publications and 30 books, including the highly acclaimed 9-volume series Handbook of Mammals of the World. For the last 50 years, his work has taken him around the world conducting field work and research. He has led tours for Smithsonian Journeys to most of the world's greatest natural history destinations, from Antarctica to Zimbabwe. Don loves to share his passion for the natural world, and his easygoing nature, sense of humor, and excellent presentations have earned him much praise and a loyal following from Smithsonian travelers.

Allen Glazner

Allen Glazner is a geologist, educator and author with particular expertise in volcanoes, tectonics, and mountain building. He believes strongly that understanding the geologic underpinnings of the planet greatly enhances one’s enjoyment of the landscape and everything that lives on it. A native Southern Californian, Allen earned geology degrees from Pomona College and UCLA before embarking on a 38-year career at the University of North Carolina at Chapel Hill, where he is Distinguished Professor Emeritus.

While his research focus is on the American Southwest, Allen has field experience many other countries including Iceland, Alaska, the Caribbean, South Africa, Mexico, Australia, Chile, and Argentina. An award-winning teacher, he has led dozens of field trips for groups ranging from the general public to academic specialists, and has trained astronauts and National Park personnel in the field and classroom. In addition to over 150 academic papers, he has coauthored several books for the public including Geology Underfoot books on Death Valley, Yosemite National Park, and Southern California. 

Allen was a runner and now is an avid cyclist and hiker. He enjoys photography, especially landscape, aerial, and 3D-reconstructive. Reading, especially fiction, is one of his sedentary pursuits. See landscape photos and more at allenglazner.com.

Wayne Ranney

Wayne Ranney is a geologist and writer who is a veteran of expedition travel, having journeyed to and lectured on all of Earth’s seven continents. He is the recipient of the 2018 American Association of Petroleum Geologists “Geosciences in the Media Award” and has received other national and regional honors for his writing, lectures, blog postings, and expeditionary guiding. His foreign and domestic travels have taken him to South America (Patagonia, Tierra del Fuego, and the Amazon), Australia and New Zealand, the Polar regions (Antarctica, Iceland, and Greenland), and desert landscapes in Africa, Asia, the Atacama, and the American Southwest.

With a lifelong interest in the earth sciences, Wayne specializes in making the fascinating story of our planet come alive for fellow travelers. He was elected to the Explorers Club and has visited more than 85 countries. Wayne is a retired professor of geology who lives in Flagstaff, Arizona near his beloved Grand Canyon. He is passionate about sharing his vast knowledge of earth history with others in an easy-going and informal style, yet he is a well-respected author of numerous award-winning books and articles. He enjoys languages, hiking, river running, photography, conversation, and anything that allows him to get outdoors with others in seeing the varied and interesting landscapes of our beautiful planet.