Literally cellphone planet: "The human race is crossing a line. There is now one cellphone for every two humans on Earth. From essentially zero, we've passed a watershed of more than 3.3 billion active cellphones on a planet of some 6.6 billion humans in about 26 years," the Washington Post reports. "This is the fastest global diffusion of any technology in human history," and the projection is 4 billion cellphones by 2010, moving on to 5 billion afte just a few years beyond that. Why? It's very flexible portable sociability (texting, talking, social networking) – even more portable than IM-ing and Web-based social networking, and look how those two technologies have taken off! The Post cites the view of Arthur Molella, director of the Smithsonian's Lemelson Center for the Study of Invention and Innovation, that sociability is "the essence of the human species."