Former and current Federal Reserve Board Chairs, Ben Bernanke (L) and Janet Yellen (R). - 

You may have not realized it, but we've all been part of a great lab experiment. What happens when our central bankers keep buying loads of bonds to stimulate the economy? But we're entering a new phase of this experiment. How does the Fed extricate the economy, now that some parts of it seem addicted to the stimulus? 

Later this week Facebook joins an elite club. On Friday the social media giant will become part of the Standard & Poors 500 index. So what exactly does that mean?

There's a company called Pave that lets financial backers invest in the future of promising young people. If their careers take off, the investors get a cut of their success. Sal Lahoud is co-founder and CEO of Pave, and he tells Marketplace Morning Report host David Brancaccio why Pave in making an investment in youth.


Follow David Brancaccio at @DavidBrancaccio