Podcast: Lee Lynd invents for the defining challenge of our time
Not since the 1970s has alternative energy been so hot, and inventors see we're at the tipping point for investment in the field. In the past, uncertainties such as weather and oil prices kept investors from funding energy-related innovation. These days it's very different for Lee Lynd and other inventors tackling what they believe is the defining challenge of our time.

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A production of the Smithsonian's Lemelson Center. Written and hosted by Paul Rosenthal. Audio production and theme music by Will Eastman. Art Molella, executive producer. Lee Lynd was interviewed on 3 May 2007 by Art Molella. Podcast released 14 February 2008.