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On this week’s tech podcast, we hear about a web-based initiative to stop tribal violence in Kenya. Also, a podcast exclusive — we launch a new monthly segment on low tech solutions to African problems, courtesy of AfriGadget. Then, to Colombia, where we’ll hear about a march organized on Facebook. And we’ll end in Japan, where one scientist wants to fly paper airplanes from the International Space Station all the way down to earth. Brilliant!