Sustainable Technology in times of climate change

Very simple user friendly appropriate sustainable technology in times of climate change and energy shortages, this more than a century old water mill in Kashmir, India is used to grind flour using hydro power. Water from a natural stream with 3 meter drop is diverted and a turbine is rotated which then moves two granite stone on top of each other. When grain like wheat, gram, millets or corn is poured in a kilogram can be made into flour in a few minutes. (Photo by Pallava Bagla/Corbis via Getty Images)