DOHA (Reuters) - On a late September evening in Qatar a persistent 35 degree Celsius heat hung outside the 2022 World Cup host's newly-built Al Janoub stadium, but down on the pitch the temperature was a cool 21 degrees.
Qatar, a tiny Gulf state known for its scorching desert climate, says it has designed an energy-efficient cooling system that can make its open-air stadiums usable even in summer temperatures that soar well into the 40s.
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