Episode 43 - David Hewitt helped research the book Philadelphia Trees: A Field Guide to the City and the Delaware Valley

David Hewitt has been working with plants, animals, soils, and water

for more than twenty-five years, starting when he began working on

small farms in upstate New York.  He has served in a variety of roles

at a number of Philadelphia institutions, including the Wagner Free

Institute of Science, and as a lecturer at the University of

Pennsylvania and a research associate in the Department of Botany at

the Academy of Natural Sciences.  He was an AAAS Science and Technology Policy Fellow in

Washington, DC, working in agricultural policy. David has an A.S. from

the Community College of Philadelphia, a B.A. in  biology from the

The University of Pennsylvania and a Ph.D. from the  Department of

Organismic and Evolutionary Biology at Harvard University.