PORT-AU-PRINCE, Haiti — It was lunchtime in one of Haiti's worst slums, and Charlene Dumas was eating mud. With food prices rising, Haiti's poorest can't afford even a daily plate of rice, and some ...

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Muds found at roughly 6,000m are an untapped source of resources vital to renewable batteries and other advanced technologies. To reach them, Japan must figure out how to mix and pump mud from the ...

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