One alternative energy source that is not often used in the U.S. is geothermal energy, and now Cornell University researchers are working to try to make it a feasible and widespread option. They began drilling a test borehole in June of this year and will run tests before implementing geothermal energy campus-wide. Jeff Tester, Professor of Sustainable Energy Systems at Cornell University, joins Closing Bell to discuss the project, the purpose of running a test before implementing geothermal energy, how this energy source can be used, and more.