There are more than 1.4 billion cars in the world today, and that number could double by 2036. If all those cars burn petrol or diesel, the climate consequences will be dire. Electric cars emit fewer air pollutants and if they’re powered by renewable energy, driving one wouldn’t add to the greenhouse gases warming Earth’s atmosphere. But producing so many electric vehicles (often abbreviated to EVs) in a decade would cause a surge in demand for metals like lithium, cobalt, nickel and manganese. These metals are essential for making EV batteries, but they’re not found everywhere. Most of the world’s lithium lies under the Atacama…
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