Lithium: A metal that floats on oil and powers our phones
Lithium, a key ingredient in lightweight batteries, is already powering the modern world, and could be key to getting the world to reduce its reliance on fossil fuels.
Look at a satellite image of South America. Halfway down on the left-hand-side is a distinctive white splodge.
Close up, that splodge turns out to be one of the most extraordinary and unspoilt places on earth, the world’s biggest salt flat.
Read more at: http://www.bbc.com/news/magazine-26993915
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