Dave Hart is a Professor in the Department of Environmental Sciences in the University of Wisconsin-Extension and an affiliated faculty in both geological engineering and geoscience departments at the University of Wisconsin-Madison. He is a hydrogeologist and geophysicist for the Wisconsin Geological and Natural History Survey where his current research interests include measurement of the hydraulic properties of mid-continent rift sediments, the hydrogeology of the Cedarburg Bog in eastern Wisconsin, and heat transfer related to geology and groundwater in ground source heat pump systems.