China's war on air pollution is causing ground pollution

The video discusses a significant reduction in fine particulate matter emissions in China, which has inadvertently led to an increase in ground-level ozone pollution. Research from Harvard and Nanjing University highlights that the decrease in particulate matter, which absorbs radicals, has resulted in more radicals available to form ozone. The study emphasizes the need for additional efforts to reduce NOx and VOC emissions to mitigate ozone pollution, particularly in urban areas like Beijing and Shanghai.

What was the percentage reduction in fine particulate matter emissions in China over four years?

• 20%

• 30%

• 40%

• 50%

Which two universities conducted the research linking particulate matter reduction to ozone pollution?

• Harvard and Oxford

• Harvard and Nanjing

• Nanjing and MIT

• Oxford and MIT

In which urban areas of China was an increase in surface ozone levels observed?

• Guangzhou and Shenzhen

• Beijing and Shanghai

• Shanghai and Shenzhen

• Beijing and Guangzhou

What are the main components required for the formation of ground-level ozone?

• NOx and VOCs

• CO2 and NOx

• VOCs and CO2

• PM 2.5 and NOx

What additional efforts are suggested to combat the rise in ground-level ozone?

• Reduce water vapor emissions

• Reduce NOx and VOC emissions

• Increase CO2 emissions

• Increase PM 2.5 emissions