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Nanotechnology, the science of manufacturing tiny mechanisms and robots not much bigger than molecules, could soon become a big part of national security in the US. Much of it is still fantasy, but nanotech students at the Massachusetts Institute of Technology (MIT) have received a $50 million (£32 million) grant from the US Army, which is hoping for long and short term results. It means that by 2025, soldiers could be wearing thin uniforms which are not only flexible but are also tough enough to withstand bullets and blasts. Uniforms under development have GPS guidance systems and live satellite feeds of the battlefield piped through an eyepiece in the helmet. There is also a built-in air conditioning system to keep the body temperature normal. Full Story