Tech's Next Feats? Maybe On-Demand Kidneys, Cheap Solar

Aired: 4/20/2012 | 0:10:36 | Clip
Optimists at Silicon Valley think tank Singularity University are pushing the frontiers of human progress through innovation and emerging technologies, looking to greater longevity and better health. As part of his series on Making $ense of financial news, correspondent Paul Solman explores a future of "exponential growth."