PHILIPPE PSAILA / SCIENCE PHOTO LIBRARY PHILIPPE PSAILA / SCIENCE PHOTO LIBRARY
Lithium evaporation test in the Salar de Uyuni in Bolivia, the largest salt flat in the world. Over a number of months the sun will evaporate the water, leaving a highly concentrated lithium chloride solution. This is then processed into lithium carbonate that is used in the production of batteries.
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