Researchers based at Cornell University have developed a method for the 3D printing of structures on the seafloor. Traditional methods of underwater construction and repair are slow, expensive, and can disrupt ecosystems. Using robot-based 3D printers and a specially formulated anti-washout concrete mix (using mostly seafloor sediment) represents a breakthrough in subsea construction technology.
The Cornell Chronicle blog mentions that the interdisciplinary group, led by Sriramya Nair, assistant…

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