Within a year, Google is aiming to have a continuous ring of high-altitude balloons in the Southern Hemisphere capable of providing wireless Internet service to cell phones on the ground.

That’s according to Astro Teller, head of the Google X lab, the company established with the purpose of working on “moon shot” research projects. He spoke at MIT Technology Review’s EmTech conference in Cambridge today.

Teller said that the balloon project, known as Project Loon, was on track to meet the goal of demonstrating a practical way to get wireless Internet access to billions of people who don’t have it today, mostly in poor parts of the globe.

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