Renewables may win most of the headlines as the future of our energy supply, but there is another arena where the battle for cleaning the environment is taking place. And, for the time being at least, it might be even more important.
Until recently, delivering hands-on training to aircraft mechanics meant bringing trainees into a hangar to see a plane under maintenance and removing the engine’s cover to allow them to look inside. At Japan Airlines, however, trainees using HoloLens, Microsoft’s “mixed reality” headset, can observe the different parts of an aircraft engine virtually.
This year, a San Francisco-based start-up hopes to demonstrate a scanning device that could revolutionise the diagnosis of cancer and heart disease — and, eventually, read our minds.

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