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Now Playing: 1-9-13 Marketplace

A meeting on guns and violence has kicked off in Washington today. The Internal Revenue Service has announced that they will start processing tax returns for the majority of filers on Jan. 30 -- a bit later than normal, thanks to the fiscal cliff. Scott Tong speaks to those who have been affected by Venezuelan President Hugo Chavez. Freakonomics Radio's Stephen Dubner talks about why Nobel laureates, Oscar winners and baseball Hall of Famers seem to live longer than their peers. Dieters are taking to social networking, fitness-tracking devices and health apps on smartphones to try and stay the course. And commentator Robert Reich explains why he thinks it's time to break up the big banks.