October 2018
Intermediate to advanced
528 pages
23h 57m
English
If the Earth were sick, nobody would be healthy.
Human footprints on the nature significantly deteriorate the environmental quality of air, water, and soil, pose a great threat to human health and reduce human life expectancy. Taking air pollution as an example, the primary and secondary ambient air standards of particulate matter of diameter 2.5 µm (PM2.5) in the United States are 12 and 15 µg/m3, respectively (US EPA, 2016). The corresponding standards of PM2.5 in China are set at 15 and 30 µg/m3, respectively (China MEP, 2016). However, the average concentration of PM2.5 for 10 provinces in China was greater than 55 (µg/m3) in 2015. According to the data from the Administration ...
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