Similar to what I found earlier this year in Chongqing, one thing that remains mostly the same in Changsha since previous visits is the air pollution. Today was no exception, and Changsha had some of its most polluted air for recent days.
According to U.S. standards, the air quality in terms of a 24 hour exposure to the smallest particles was in the "very unhealthy" category. I saw few people wearing face masks, and those I did see were clearly not the types effective at filtering harmful pollutants.
Despite the smog, the sun at times did its best on a rainless and humid day to reach humanity. So far more than people wearing face masks, I saw people employing commonly used methods in China to avoid tanning.
Perhaps if these people knew the degree to which heavy smog blocks the radiation that causes tanning, they wouldn't have felt the need to take any extra precautions today.
According to U.S. standards, the air quality in terms of a 24 hour exposure to the smallest particles was in the "very unhealthy" category. I saw few people wearing face masks, and those I did see were clearly not the types effective at filtering harmful pollutants.
Despite the smog, the sun at times did its best on a rainless and humid day to reach humanity. So far more than people wearing face masks, I saw people employing commonly used methods in China to avoid tanning.
Perhaps if these people knew the degree to which heavy smog blocks the radiation that causes tanning, they wouldn't have felt the need to take any extra precautions today.
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