Google's Wi-Fi balloon

                                           Loon for all. balloon-powered internet  for  everyone.the project mainly focus on Many of us think of the internet as a global community.But two-thirds of the world's population does not yet have internet access.project Loon is a network of balloons travelling on the edge of space,designed to connect people in rural and remote areas,help fill coverage gaps, and bring people back online after disasters.
                                        Project Loon balloons float in the stratosphere, twice as high as airplanes and the weather.stratosphere.there are many layer of wind ,and each layer of wind varies in direction and speed.Loon balloons go where they're needed by rising or descending into a layer of wind blowing in the desired direction of travel.
                                       Project Loon  began in june 2013 with an experimental pilot.  The results of the pilot test have used to improve the technology,ad continued refinements are now  being tested in an ongoing series of research flights in california's Central Valley.