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#1
06-17-2016, 03:09 AM
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This Birdhouse Will Give You Free Wi-Fi For Reducing Air Pollution - Popular Science
http://forums.calgaryn.com//t1.gstat...05ieW7YXBLwpJQ
Popular Science <img alt="" height="1" width="1"> This Birdhouse Will Give You Free Wi-Fi For Reducing Air Pollution Popular Science The devices are mounted to trees around the city, and LED lights indicate air pollution levels in the immediate area. When pollution levels dip below a specific threshold, the roof of the device glows green indicating that free Wi-Fi is available to ... Courtesy of WestNet City Wi-Fi www.westnet.ca 
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