It plans to use the same signal frequency for its version of GPS that Europe had carved out. The overlap could block Europe from using its satellites for security reasons.
Since sunlight and wind can be unreliable, renewable utilities install big backups.
Despite environmental message, many stick up their noses at eco-toilets.
At least nine major car companies promise plug-in vehicles by 2013.
Alternative energy sources help power campuses across US.
Ideas: New programs offer incentives to motivates students to study.
Ten seconds of work has digitized libraries, whether the amateur translators know it or not.
Wind power could feed 20 percent of the US energy diet. But first, the country needs a new energy network.
Outdoor advances such as low-power chips and tiny solar panels let computers get a breath of fresh air.
The US is a late entry, but new domestic projects are revving to go.
Once limited to movies, they head into the real world.
A new kind of census hopes to find the 1 billion people living off the grid.
As millions move to online social networks, so do computer threats.
Buildings gobble up 40 percent of America's energy. A new tool allows people watch their power diets.
New editing software helps kids express hope through videos.
Once thought to be waste, rice husks now can be used as clean, cheap fuel for developing countries.
Gyms hook up exercise bikes to TVs, laptops, and batteries to let their patrons power the place.
‘Boot camp’ in Maine teaches them how to get their message across in five minutes.
Column: The old tricks aren’t working, so Tara Paterson has drafted some new ones.
Ideas and reports from the annual innovation incubator.