Solar Power stories

Here in the U.S., we're used to thinking about solar power as one of those happy eco-friendly things that we'd all totally be using except for the fact that it's so much more expensive than fossil fuels. In the developing world, though, it's exactly the opposite: solar power is gaining ground with 1.3 billion people simply because it's the cheapest way to go.
For as long as people have been envisioning the house of the future, it almost always features control initiated with the briefest of gestures. Now, in the name of conserving energy that vision could come true with a solar house designed to use an Xbox Kinect to switch off energy consuming devices with simple movements.
It's common to see houses with solar panels on the roof harvesting energy to power household electricity, and if lucky the electrical grid. Now, a team from the University of Notre Dame is swinging back around on the idea of solar paint, and using semi-conducting particles to produce energy. This paint would be cheap enough to cover your entire house and turn it into a massive solar powered generator.
How's this sound: giant solar arrays in orbit around the Earth, harvesting undiluted and virtually endless power from the sun and then beaming it straight down to the ground with lasers. Badass, right? And according to a three year, ten nation, peer reviewed study by the International Academy of Astronautics, we could make it happen within ten years.