WiMAX has been touted as WiFi on steroids, with better performance and range. But it's not going to be cheap for the company setting up the network: Sprint's estimated price tag for its proposed Xohm system would run to several billion dollars over the next three years.
Sprint's plans call for an initial rollout to several U.S. cities at the end of this year. But then it really gets moving: Xohm is supposed to cover 100 million people by the end of 2008. Forsee was a big supporter of the program, and a few bloggers have expressed concern that his resignation could stall progress.—Gregory Mone
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.