Today’s Solutions: December 15, 2025

Coober Pedy is the epitome of the Australian mining town. Located in the South Australian outback, it is as famous for its opals as it is for the extraordinary underground housing that has become a feature of its way of life. Now the township of 3,500 people may be about to make a name for itself in another way – abandoning its total reliance on expensive, imported diesel fuels for its electricity, and forging a…

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