Fresh air in Hong Kong is beginning to feel like a luxury. On Monday the Air Pollution Index or API went off the charts. It hit the maximum 500 again on Tuesday. An API of 200 is already considered hazardous to health.
Fresh air in Hong Kong is beginning to feel like a luxury. On Monday the Air Pollution Index or API went off the charts. It hit the maximum 500 again on Tuesday. An API of 200 is already considered hazardous to health.