Why This Nuclear Power Plant Is Restarting Three Mile Island, known for being the site of the worst U.S. nuclear energy accident, is now at the forefront of efforts to expand nuclear capacity to meet rising electricity demand. Rebecca F. Elliott, a reporter covering energy for The New York Times, explains. Video by Rebecca F. Elliott, Alexandra Ostasiewicz, Nikolay Nikolov, Laura Salaberry and Dave Horn #ThreeMileIsland #Nuclear #Energy