A county-level sanitation office in southern China has invited ridicule and stoked a public debate after posting a job that requires a PhD to supervise garbage trucks and landfills – an unusual demand that critics say epitomises China’s runaway degree inflation.The posting in Guangdong province, by the office that manages urban environmental sanitation for Shixing county, appeared online last week under a notice for “urgently needed high-level talent for public institutions” issued by the...