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of the potential and newness of the technology that the public knows of it mainly through fiction and films. To explore today's nano reality,[link widoczny dla zalogowanych], though, we recently participated in NanoDays 2011, a nationwide festival of educational programs about nanoscale science and engineering. In the Lemelson Center's Spark!Lab, our hands-on invention space, visitors of all ages learned about nanotechnology through activities that ranged from measuring their height in nanometers to building a giant model of a carbon nanotube entirely from balloons. At the Lemelson Center, we believe that the tiniest spark of an idea can have widespread impact on everyday life,[link widoczny dla zalogowanych], and with these activities,[link widoczny dla zalogowanych], we sought to fire the imaginations of young people about nanotechnology,[link widoczny dla zalogowanych], without overstating its promises or its dangers.See more posts from and about the Smithsonian.This post was originally published on the National Museum of American History's O Say Can You See?" blog and is republished here with permission.Images: 1. The Nano Hummingbird