Originally developed by the U S military the Global Positioning System -- which is now vital to nearly every facet of modern life -- is being upgraded to GPS III CBS News Contributor David Pogue reports Seth Doane introduces us to Ruth Coker Burks who inherited a family cemetery in Hot Springs Arkansas -- and became a mother of sorts to countless sons who were abandoned by families and churches because they suffering from AIDS Lee Cowan gets to know Alec Cabacungan -- the leading spokesperson for Shriners Hospitals for Children A new film -- starring Anthony Hopkins and Jonathan [... more]