University of Scranton physics and electrical engineering lab manager Jim Loven shows students an "Off the Grid" solar energy system used to charge a battery and operate an household lamp during Earth Day festivities at the school, Tuesday, Apriul 22, 2014, in Scranton, Pa. From left are: Tyler Mulvihill, of Wilkes Barre; Isabella Dolente, Haddon Heights, NJ; Jim Loven, Chloe Strickland, of Scranton; Jackie Pesavento, Clarks Summit and Caroline Korz, of Havertown. (AP Photo/Scranton Times & Tribune, Michael J. Mullen) ( Earth Day Pennsylvania Daily Life )