Batteries power the current design, but liquid-oxygen and liquid-hydrogen fuel cells—no batteries to run out of power—could replace them in the future. The wheels will rotate 360 degrees, allowing the platform to travel in any direction. The only extraneous part of the design is the gold color, from ano-dized aluminum, added for retro flair. A more suitable (albeit pricier) metal, such as gold foil, will provide thermal protection when the rover goes into operation.
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Innovative fixes for five of the country's biggest infrastructure messes, plus a look the quest to read the human mind, the LCD screen that might finally kill paper dead, and the world's scariest science.
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