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Inhabitat's Week in Green: 'Iron Man' prosthetics and a creepy Airbnb

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.

Want to see the state of the art in solar-powered architecture? Check out eight of the world's most efficient sun-powered homes built by students for the 2015 Solar Decathlon. In other solar news, Panasonic just shattered a world record by building the most efficient photovoltaic panel on the planet. A Dutch firm recently announced plans to build the largest wind farm in Africa near a remote Kenyan lake. And Washington, DC, unveiled the world's largest waste-to-energy system, which will generate electricity from the city's raw sewage.

The self-driving cars are coming -- and Tesla has a leg up on the competition. This past week, the electric automaker launched a software update that allows the Model S to drive, park and brake without relying on a human driver. Tesla's battery Gigafactory also hit the headlines as two journalists trespassed on the facility grounds -- and then injured employees with their car while attempting to escape. Electric bikes make a lot of sense for city cyclists, and the VANMOOF Electrified is one of the best. It comes with built-in lights, a dashboard display and integrated GPS tracking -- and we're giving one away in our Green Halloween Costume Contest. We also showcased an awesome underwater jetpack that allows you to glide through the sea like a dolphin, and we were shocked to learn that villages in Laos are making boats out of repurposed bombs from the Vietnam War.

Are we alone in the universe? This past week scientists discovered some unexpected activity around a faraway star -- and some believe that it could signify a megastructure built by an alien civilization. Back here on Earth, 3D printers are revolutionizing the way we make things. A new building printer can crank out an entire two-story home in a single day. Meanwhile, Disney announced a new partnership to produce 3D-printed bionic Iron Man arms for kids in need of prosthetics, and Adidas launched a new "Futurecraft" running shoe made with 3D-printed materials. And since Halloween is on the way, we showcased the creepiest Airbnb we've ever seen: a dank subterranean room in the catacombs of Paris filled with 6 million skeletons.