Running out of IP Addresses

Imagine what would happen if the United States ran out of phone or social security numbers. We would be unreachable, even unidentifiable! That is exactly what's happening with IP addresses: those codes that identify each blackberry, iPad, and Website. IP addresses are set to run out in less than a year. Alexis Madrigal, lead technology writer for joins us to talk about what this means in terms of the way we communicate in an Internet-driven world.