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What Is Li-Fi And When Will You Use It?

Li-Fi is a lot like Wi-Fi, but it uses light to transmit data. NPR's Scott Simon speaks to the man who invented the faster alternative: Harald Haas. More Info: http://www.npr.org/2015/11/28/457672585/what-is-li-fi-and-when-will-you-use-it-to-download-everything-faster #FullNewsAudioAvailable #NPR

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