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The use of dirty coal as a heat source makes life tough in the Mongolian winter. ETH geophysicists are helping to develop geothermal energy as a clean alternative.

Many Europeans have an idyllic view of Mongolia as a land of wide, empty spaces and pristine nature. But the truth is more complicated, especially in winter. That’s the time of year when life is anything but idyllic for the people who live here. Their settlements are shrouded in thick, sooty smoke that makes it difficult to breathe. The inhabitants face levels of pollution that are up to 80 times higher than guideline values specified by the World Health Organization (WHO) – an unacceptable

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