IRA FLATOW, HOST:
This is SCIENCE FRIDAY, I'm Ira Flatow. If you have a smartphone, you might take the Internet for granted, right? It's always there. But around the world, some four and a half billion people still are not connected. Google, being in the Internet business, has a plan to expand its reach, bring Internet to all these people, but it's not by spooling out fiber-optic cable or building cell towers. It's using a technology that, well, sort of sounds like it belongs in another century: free-floating balloons. They call it Project Loon.