The world's most pressing issues need smart solutions, but that doesn't necessarily mean high-tech.
While various cutting-edge innovations, such as mind-controlled robotic body suits and microchip drug delivery, are improving the lives of people across the globe, there are also a number of equally impactful inventions with little-to-no electronics.
From a wheel-shaped water container for the developing world to a lamp powered only by gravity, these seven inventions are saving lives through simplicity.
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