Professor John Cushman is a University Distinguished Professor of Earth and Atmospheric Science and Professor of Mathematics. The focus of Professor Cushman's research is the physics of fluids in porous media and is currently working on a new type of electric vehicle power using “refillable” technology. https://www.purdue.edu/newsroom/releases/2019/Q1/refillable-technology-could-provide-enough-energy-to-drive-an-electric-car-up-to-3,000-miles.html .