He is the Chancellor’s Commonwealth Professor of Geology (2015-2017), the 2012 Chancellor’s Award for Teaching Excellence, NOVA honored him with the Presidential Sabbatical Award in 2013, he received the Biggs Award for Geoscience Teaching Excellence from the Geoscience Education Division of the Geological Society of America in 2014, and the recipient of the SCHEV Outstanding Faculty Award in 2015. Callan teaches introductory geology courses there, Callan has developed new courses including Snowball Earth, Regional Field Geology of the Northern Rockies, Regional Field Geology of the Canadian Rockies, and Regional Field Geology of Eastern California. In addition to publishing in the professional scientific literature, he contributes book reviews, travel stories, and cartoons to EARTH magazine and was a contributor to five geology and Earth science textbooks published by