United Press International: When snowstorms blanketed large swaths of China this winter they aggravated transportation bottlenecks and already-depleted coal reserves, provoking local power cuts and highlighting the vulnerability of China’s reliance on coal. But despite such challenges and coal’s damaging environmental side-effects, demand is unlikely to wane soon. “The government is very aware of relying too heavily on coal, because it contributes to the energy security issue and the environmental …