In this Friday, Oct. 19, 2012 photo, University of Pennsylvania Professor Kim Steiner addresses an audience during the American Chestnut Summit in Asheville, N.C. "The restoration of Am

 

              In this Friday, Oct. 19, 2012 photo, University of Pennsylvania Professor Kim Steiner addresses an audience during the American Chestnut Summit in Asheville, N.C. "The restoration of Am
In this Friday, Oct. 19, 2012 photo, University of Pennsylvania Professor Kim Steiner addresses an audience during the American Chestnut Summit in Asheville, N.C. "The restoration of American chestnut is a really impractical idea. Some people might say it's a nutty idea," Steiner acknowledged. But, he said, it is “a compelling idea..., a romantic idea..., an emotional idea. And that's where the motive comes from. That's where it has to come from to sustain this program." (AP Photo/Allen Breed)