Project Loon, sometimes seen in the news, is related to

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Project Loon is a research and development project being developed by Google X with the mission of providing Internet access to rural and remote areas. The project uses high-altitude balloons placed in the stratosphere at an altitude of about 18 km (11 mi) to create an aerial wireless network with up to 4G-LTE speeds.By partnering with telecommunications companies to share cellular spectrum, Google is trying to enable people to connect to the balloon network directly from their phones and other LTE-enabled devices. Microsoft is planning to use unused TV spectrum to provide internet access in remote areas.