现在中国治理空气污染
治理的太好了,
空气里的灰尘少了,空气透明度高了,
阳光让海水温度上升
北美从阿拉斯加到加州的极端天气就多了
https://www.scmp.com/news/china/science/article/3262641/cleaner-air-china-causes-sudden-warming-north-america-study-finds