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It's called Li-Fi and it may bring internet to half the world
Professor Harold Haas and his team have essentially unlocked what is known as "Li-Fi," or Light Fidelity and are using simple LED light sources to power their internet and deliver the information in one packet.
“The potential expansion to the internet is massive and my aspiration is that this broadband solar panel receiver technology for Li-Fi will help solve the challenges of the digital divide throughout the world," Haas says.
Via Sepp Hasslberger
What's good about this is that it will decrease the load of microwave energy we absorb from the ever expanding network of WiFi routers and perhaps in time the mobile phones as well.
And here's another article with some more data...
http://www.sciencealert.com/li-fi-tested-in-the-real-world-for-the-first-time-is-100-times-faster-than-wi-fi
Oh what a glorious time we live in!