Rise of the Grey Nations
As people live longer, will the world become more crowded? What will be the problems nations face as their populations get older? How does life expectancy affect birth rates? Aubrey de Grey, Michael Rose, and Leonard Guarente share their thoughts on what implications could arise as a result of our new, longer lifespans.
More from this series: Longevity
Image courtesy of Sherman Wang; Recorded June 2011; Posted January 2012