Neat. Archive: https://archive.today/HRWw3 From the post: >>Since it was invented in the 1980s, 3D printing has moved from the laboratory to the factory, the home and even outer space. Now, an interdisciplinary group of Cornell researchers is developing a way to bring the technology to the ocean. By 3D-printing concrete underwater, the new approach could transform on-site maritime construction and the repair of critical infrastructure that connects continents.