60 Minutes Season 45 Episode 47 9.1.13
- September 1, 2013
After wrecking at sea a year and a half ago, the Italian luxury liner awaits one of the most expensive and daunting salvage operations ever; then, Khan Academy and its free online educational videos are moving into the classroom and across the world. Their goal: to revolutionize how we teach and learn; and, When Jack Dorsey invented Twitter, he changed the way we communicate
