Mobile devices outsold PCs last year for the first time, and top smart-phone apps need little more than a year to win the kind of audience it used to take technologies decades to reach. What are the limits of mobile computing?
Why I think computational power will solve the world's energy problems in this century.
Seeing Big Brother in the grid, some citizens are mounting opposition to wireless electricity meters.
In a world of more electronics and solar energy, there's less and less need for AC power.
Drivers who want to use less fuel should consider not driving at all—by letting the car take over.
To lower fossil-fuel emissions while meeting demand, power grids around the world need to become a lot more intelligent.
TR takes a look at the best mobile software for tracking and reducing consumer energy use.
U.S. electricity regulator Jon Wellinghoff says a smart electrical grid could cut the need for new power plants. He's got an app to prove it.
To reach a goal of getting 80 percent of its power from renewable sources by 2050, Germany plows subsidies into the smart grid.
As the social network grows, does its responsibility to use energy wisely also increase? Facebook's energy czar, Bill Weihl, has the answers.