Listen: Half An Hour Can Make A World of A Difference – Maria Salvador by James Hermon | Dec 1, 2011 | Fall 2011 Listen, Tweet and Make a Difference Student artist Maria Salvador shares how she uses her talents to volunteer within the community. 1. Half%20and%20Hour%20Can%20make%20a%20Difference%2011.10.11 00:00 Ready PlayStop Popout Download X