Department Chair
Michael P. Roberts
Associate Professor of Biology (1992).
Rector North Room 1304
(717) 245-1201
Contributing Faculty
Thomas M. Arnold
Professor of Biology (2003).
Rector North Room 2303
(717) 245-1319 |
B.A., St. Mary's College of Maryland, 1993; Ph.D., University of Delaware, 1998.

Dr. Arnold is a biochemist and physiologist who studies natural toxins, pheromones, odors, and anti-microbials. He focuses on natural products found in both marine and terrestrial ecosystems, including seagrass communities, coral reefs, temperate forests, and agricultural fields.
Rebecca E. Connor
Assistant Professor of Chemistry (2010).
Stuart Hall - Rector Complex Room 2111
(717) 245-1553 |
B.S., Carnegie Mellon University, 1999; Ph.D., California Institute of Technology, 2008.

My research interests currently include the molecular interactions of electrophilic natural products with human leukemia cells and the role of chaperone proteins in apoptosis and stress response pathways. Research projects in my lab range from chemical synthesis to proteomics and protein engineering.
R. David Crouch, Jr.
Professor of Chemistry (1994).
James Hall - Rector Complex Room 2227
(717) 245-1351 |
B.A., Duke University, 1978; M.S., Shippensburg University, 1985; M.A., Johns Hopkins University, 1988; Ph.D., 1991.

His research interests lie in the development and application of new organic synthetic methodology. Current work is focused on the development of a new alpha adrenergic agonist and continued investigations of new methods for selectively deprotecting silyl ethers. Another area of interest is the development of new organic chemistry exercises on the microscale and using microwave technology.
Tiffany A. Frey
Assistant Professor of Biology (2011).
James Hall - Rector Complex Room 2221
(717) 254-8037 |
B.S., The Pennsylvania State University, 2000; Ph.D., Johns Hopkins University School of Medicine, 2008.

Jason Gavenonis
Assistant Professor of Chemistry (2014).
Stuart Hall - Rector Complex Room 1109
(717) 245-1975 |
B.A., University of Pennsylvania, 2003; Ph.D., Boston College, 2010.

Kirsten A. Guss
Associate Professor of Biology; John R. & Inge Paul Stafford Chair in Bioinformatics (2001).
Rector North Room 2302
(717) 245-1530 |
B.A., Gettysburg College, 1989; Ph.D., Carnegie Mellon University, 1997.

Prof. Guss is interested in the molecular basis of development. Her research focuses on the role of the transcription factor scalloped during development of the fruit fly Drosophila melanogaster. Prof. Guss teaches the following courses in the biology program: 127: This is Your Life, 317: Genetics, 318: Animal Development, and 418: Developmental Genomics.
John H. Henson
Senior Associate Provost for Academic Affairs; Charles A. Dana Professor of Biology (1989).
West College (Old West) Room 8
(717) 245-1434 |
B.A., University of Virginia, 1979; M.S., Florida State University, 1983; Ph.D., Harvard University, 1989.

He teaches courses in cell biology, immunology, animal development, marine science, and health studies. His research program utilizes marine orgnisms as model experimental systems for studying basic aspects of cell structure and function, particularly how cells move, change shape, and divide.
Michael S. Holden
Professor of Chemistry; Alfred Victor duPont Chair in Chemistry (1989).
James Hall - Rector Complex Room 2225
(717) 245-1481 |
B.S., Allegheny College, 1980; Ph.D., Colorado State University, 1985.

His interests are in the area of organotransitionmetal-mediated synthesis of organic compounds. Presently, his research is focusing on the development of new reactions involving an easily accessible organo-iron system. Another ongoing effort is the development of microscale laboratories for organotransitionmetal chemistry.
David B. Kushner
(Director, Norwich Science Program in England, 2015-17)
Associate Professor of Biology (2003).
Rector North Room 1302
(717) 245-1328 |
B.S., Haverford College, 1993; Ph.D., University of Pennsylvania, 1998.

He teaches courses in microbiology, virology, and RNA biology. His research combines genetics and cell and molecular and biology with modern genomic and bioinformatic approaches to understand interactions between viruses and their hosts, and also uses evolution-based approaches to understand the relationship between viral RNA sequence, structure, and function.
Michael P. Roberts
Associate Professor of Biology (1992).
Rector North Room 1304
(717) 245-1201 |
B.A., Colgate University, 1977; M.S., Miami University, 1979; Ph.D., Yale University, 1988.
Ganoe Award for Inspirational Teaching, 2002-03.

His research interests center on the biology of cancer, in particular leukemia, and the mechanisms by which cancer cells might be reprogrammed to either behave normally or self destruct. He and his students use genomic, proteomic and bioinformatic methods to explore changes in gene expression that distinguish cancer cells from normal cells. His teaching interests included genetics, molecular genetics, bioinformatics and the biology of cancer.
Amy E. Witter
Professor of Chemistry (1999).
Stuart Hall - Rector Complex Room 2109
(717) 245-1681 |
B.A., Wellesley College, 1987; Ph.D., University of California at Davis, 1996.

Her long-term research interests lie in the field of environmental analytical chemistry. Her current research projects involve investigating the chemical effects of urbanization on stream sediment chemistry and the development of new analytical methods for studying plant secondary metabolites.
Dana J. Wohlbach
Assistant Professor of Biology (2013).
James Hall - Rector Complex Room 2219
(717) 254-8131 |
B.A., Franklin and Marshall College, 2002; Ph.D., University of Wisconsin-Madison, 2007.