Geoscience Animation Library on DVD

Robert W. Christopherson attended California State University-Chico for undergraduate work and received his Masters in Geography from Miami University, Oxford, Ohio. He joined the American River College faculty in 1970, where he founded the geography program. From 1970 to 1999 he taught such courses as physical and cultural geography, weather and climate, humans and the environment, and humans in the urban environment, and is currently Professor Emeritus.

Robert Christopherson is the recipient of numerous awards, including: the Patrons Chair and Student Association Teacher of the Year Awards at his college, the 1999 Distinguished Teaching Achievement Award from the National Council for Geographic Education, the 1998 Textbook Award for Geosystems, 3/E from the Text and Academic Authors Association, the California Geographical Society's 1997 Outstanding Educator Award, and, most recently, the 2005 President's Award and 2005 Textbook Award for Elemental Geosystems, 4/E from the Text and Academic Authors Association.

Robert presented in seminar, television and radio, and research papers on topics such as the physical geography of the polar regions, global climate change, energy issues, and environmental awareness. He and his professional photographer wife completed five polar expeditions; they attended the 2004 Arctic Climate Impact Symposium in Reykjavik, Iceland to gain photo and video coverage as well as research for Geosystems and Elemental Geosystems. Robert's wife has provided more than 300 exclusive photos for each of these texts.


Darrel Hess began teaching geography at City College of San Francisco in 1990 and served as chair of the Earth Sciences Department from 1995 to 2009. After earning his bachelor's degree in geography at the University of California, Berkeley, in 1978, he served for two years as a teacher in the Peace Corps on the Korean island of Chejudo. Upon returning to the United States, he worked as a writer, photographer, and audiovisual producer. His association with Tom McKnight began as a graduate student at UCLA, where he served as one of Tom's teaching assistants. Their professional collaboration developed after Darrel graduated from UCLA with a master's degree in geography in 1990. He first wrote the Study Guide that accompanied the fourth edition of Physical Geography: A Landscape Appreciation, and then the Laboratory Manual that accompanied the fifth edition. Darrel has been authoring both works ever since. In 1999 Tom asked Darrel to join him as coauthor of the textbook. As did Tom, Darrel greatly enjoys the outdoor world.


Fred Lutgens and Ed Tarbuck have been good friends and colleagues since 1970. Between them, they have more than 57 years of experience teaching geology to undergraduates, and both have been recognized with awards as excellent and inspiring professors. They share a special interest in introducing geology to beginning students and a belief in the value of field experiences for students of all levels.

Lutgens and Tarbuck published their first college text, Earth Science, in 1976. That book, winner of the McGuffy Award from the Text and Academic Authors Association, is now going into its tenth edition. In 1983, as the first edition of Earth was being prepared, gifted geology illustrator Dennis Tasa joined the author team. Since then the three have collaborated on more than twenty projects. Not only do Tarbuck, Lutgens, and Tasa work well together creatively; they also enjoy spending time in the Sangre de Cristo Mountains near Tasa's New Mexico studio.

Tarbuck enjoys downhill skiing in Colorado, fly fishing near his childhood home in Northern Minnesota, and spending time in the Cascades. Lutgens is an avid runner, and when he can make the time, truly enjoys hiking the canyons of the Colorado Plateau. Although Lutgens and Tarbuck think alike on many issues, they don't agree on everything. Lutgens is devoted to jazz and classical music, whereas Tarbuck prefers pop artists or a good country station.


Gary A. Smith is a Professor of Earth and Planetary Sciences at the University of New Mexico and Fellow of the Geological Society of America. He has an undergraduate geology degree with a specialty in geophysics from Bowling Green State University and a Ph.D. in geology from Oregon State University. Gary has strong interests in science education through his membership in the National Association of Geoscience Teachers and the National Science Teachers Association, and as Director of the Office of Support for Effective Teaching, the faculty development center at the University of New Mexico.

Aurora Pun is a Lecturer in the Department of Earth and Planetary Sciences at the University of New Mexico. She holds an undergraduate degree in paleontology from the University of California, Berkeley and M.S. and Ph.D. degrees in Geology from the University of New Mexico, Institute of Meteoritics. Aurora has taught physical geology for over 14 years. Also a member of the National Association of Geoscience Teachers, Aurora has taught a course for teachers on developing inquiry-based K-12 curricula in the earth and space sciences.


Alan P. Trujillo teaches at Palomar Community College in San Marcos, CA, where he is co-Director of the Oceanography Program and Chair of the Earth Sciences Department. He received his bachelor's degree in geology from the University of California at Davis and his master's degree in geology from Northern Arizona University, afterwards working for several years in industry as a development geologist, hydrogeologist, and computer specialist. Al began teaching in the Earth Sciences Department at Palomar in 1990 and in 1997 was awarded Palomar's Distinguished Faculty Award for Excellence in Teaching. He has co-authored Introductory Oceanography with Hal Thurman and is a contributing author for the textbooks Earth and Earth Science. In addition to writing and teaching, Al works as a naturalist and lecturer aboard natural history expedition vessels in Alaska and the Sea of Cortez/Baja California. His research interests include beach processes, sea cliff erosion, and computer applications in oceanography.