Each week our friends at Inhabitat recap the week's most interesting green developments and clean tech news for us -- it's the Week in Green.
Fresh water is the most precious resource on Earth, and it's becoming increasingly scarce -- but a new invention could make desalination an affordable, cost-effective technology. A team of scientists from Germany and the US has developed a "water chip" that uses an electrical field to separate salt from seawater. That isn't the only new innovation that has the potential to change the world. This week Inhabitat took a look at the Horizon mass transit system, a futuristic hybrid train-plane propelled by a maglev-style mechanism. The UK celebrated the launch of the world's largest offshore wind farm, and Apple announced plans to build a 18-20 MW solar plant to power its data center in Reno, Nev. A 15-year-old from Canada created a flashlight that is powered entirely by body heat from a human hand. And in one of the week's most uplifting stories, an amputee built herself a prosthetic leg out of Legos (it might not be very practical, but it sure is cool).