Real-life invisibility cloak shows the promise of ‘nanomanufacturing’

This week, the media reported on scientists developing materials they say could create a kind of invisibility cloak. The research was funded in part by the National Science Foundation. It’s just one example of ?nanomanufacturing,? which the NSF sees as a way to give the United States an edge as industrial manufacturing wanes. Guest: Bruce Kramer, senior advisor for engineering at the National Science Foundation