Sichuan power crunch sparks calls for rethink of coal in China's energy mix

As much of China continues to bake under the worst heat wave in at least 60 years, a drought is drying up reservoirs and crippling hydropower stations in southwestern Sichuan province, the largest producer of the renewable energy, causing a power crunch and sparking calls for a rethink of the black sheep in the nation's energy mix: coal.