http://www.ted.com What was the greatest invention of the industrial revolution? Hans Rosling makes the case for the washing machine. With newly designed graphics from Gapminder, Rosling shows us the magic that pops up when economic growth and electricity turn a boring wash day into an intellectual day of reading. TODAY: From 11:30am-1:30pm EDT, Hans Rosling will be answering questions in TED Conversations. Pop over!