How to build a Dyson sphere in five (relatively) easy steps

We are closer to being able to build a Dyson Sphere than we think. By enveloping the sun in a massive sphere of artificial habitats and solar panels, a Dyson Sphere would provide us with more energy than we would ever know what to do with while dramatically increasing our living space. Implausible you say? Something… » 4/17/12 11:00am 4/17/12 11:00am