Born: 1936, Council Bluffs, Iowa
For 36 years, Claus's research and that of his students has addressed various aspects of microbial physiology, such as heavy metal resistance in Gluconobacter as well as important applied contributions including long-term monitoring of the Virginia Tech Duck Ponds, input and outlet streams for fecal coliforms all this leading to >30 publications and two texts. Over the numerous years teaching General Microbiology, Advanced Microbiology, Physiology of Microorganisms, and other classes, Claus has made major contributions to the improvement of teaching techniques for enhancing student learning. He has experimented with Active (Cooperative) Learning in large classes. Not surprisingly, he has received a number of awards including Teaching Excellence in the College of Arts & Sciences (1981, 1985), Outstanding Biology Undergraduate Advising (1987), Outstanding Biology Teacher (1994), American Society of Microbiology Teaching Award (1996). Claus directed 24 graduate degrees before retiring in 2002.