For generations, Ulanqab – a city several hundred kilometres northwest of Beijing whose Mongolian name means “red cliff pass” – was known for its windswept pastureland, where cattle grazed and potatoes thrived under long hours of sunlight.Its economy hinged on the weather, driven by the cool, strong breezes sweeping through the Yinshan mountain range.Today, giant wind turbines stand next to livestock across those sloping grasslands.As the global artificial intelligence boom fuels a scramble...