Figure 3. Air pollution in Wuhan at the same time in 2019 and 2020. Above is before, below is after (Source: [6])

From

The Global Lockdown: Some Thoughts on a Potential Policy Solution to Climate Change and Other Environmental Challenges

Ugbede Victor Ahiaba

American Journal of Environmental Protection. 2020, 8(2), 49-52 doi:10.12691/env-8-2-3