Lithium boom comes to Brazil's 'misery valley'

In a cloud of gray dust, a heavy-duty excavator loads a truck with stone blocks containing lithium, the “white gold” of the clean-energy revolution, which some hope will transform this parched, impoverished region of Brazil.

Sun-scorched and drought-prone, the Jequitinhonha valley, in the southeastern state of Minas Gerais, is one of the poorest places in the country.

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