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Among them, Baoding city in Hebei, about 140 kilometers southwest of the capital, boasts the best achievement, with its average concentration of PM 2.5 during the period lowered to 53 micrograms per cubic meter, falling by 36.1 percent from the same period of 2018, according to the report.

Among the countless temples of Guan Gong across China, the one in Xiezhou county in Yuncheng, where Guan Yu was born, is the most typical, the largest, best preserved and most skilfully constructed.

Amazon’s English deliveries comply?with Britain’s requirements for drone experiments: No flying above 400 feet, and no flying after dark or during inclement weather. The drones make autonomous flights over well-charted, relatively bucolic terrain.

Ambient air pollution affects urban and rural areas. Major sources include inefficient energy use in households, industry, the agriculture and transport sectors, and coal-fired power plants. In some areas, sand and desert dust, waste burning and deforestation are additional sources of air pollution. Air quality can also be influenced by natural elements such as geographical, meteorological and seasonal factors.

Amazon’s health and wellness endeavours include its acquisition of?online pharmacy Pillpack, its Haven healthcare partnership with JP Morgan Chase and Berkshire Hathaway, and the company’s new Halo health tracking device. The company also sells Amazon Web Services to healthcare customers.