Bill Gates talks about ending polio in India

Microsoft founder Bill Gates has spent the last 18 years giving away his billions.  He talks to Matt Lauer about the Bill and Melinda Gates Foundation's progress, saying it's vaccine effort has contributed to eradicating polio around the world, but there is still much more to be done.  Check out the interview at http://video.today.msnbc.msn.com/today/50637245