Published on November 13, 2019. Prompted by the hazy sky over Osaka, this essay refers to a PM2.5 distribution map and compares air pollution conditions in Japan, the Korean Peninsula, China, northeastern India, and Indonesia. It argues that anyone speaking about global warming must first face the reality shown by air pollution maps, where the true source of the problem is immediately visible.

November 13, 2019.
If you do so, you will see at a glance which country is the root cause of what you call global warming.
This morning, the sky over Osaka looked slightly hazy.
So I checked the PM2.5 summary, and while Japan was generally below the health standard value, most of the Korean Peninsula was bright red.
China, northeastern India near China, and Indonesia were completely bright red.
Greta Thunberg, the Swedish high school girl, should look at https://pm25.jp/ immediately.
If you do so, you will see at a glance which country is the root cause of what you call global warming.