Microloans have helped people around the world achieve economic success. Now, they're doing the same for some L.A. business owners. Guns and gun parts fabricated on 3-D printers? It?s possible. Madeleine Brand sits down with USC tech guru Andrew Lih as he explains the present and future of 3-D printers. Then Val and Madeleine talk with Sam Lubell and Greg Golden about the LA that "could have been" if a few urban planning proposals had been successful at the beginning of the 20th century. "Never Built: Los Angeles" is a reflection of these proposals and will be showing at the A+D Architecture and Design Museum
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