Dr. Zhifeng Ren is an M.D. Anderson Chair Professor in the Department of Physics and also Director of the Texas Center for Superconductivity, both at the University of Houston. He specializes in carrier mobility among many other things. He discusses a plan for a multifunctional highway system incorporating superconductor levitated vehicles and liquefied hydrogen. If the system were built, it would provide energy and travel at 500 miles/hour without using greenhouse gasses. Listen to Planet Philadelphia on your radio dial at 92.9 FM in NW Philadelphia or gtownradio.com, 4-5:00 PM ET the 1st & 3rd Friday/month. www.planetphiladelphia.com | @planetphila



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