A global catastrophe story that does NOT mention “global warming” ...
Oh. I see.
That's because it shows that climate changed naturally BEFORE us evil American capitalists spoiled the earth and killed all living things.
A global climate story that does NOT mention CO2 levels.
Oh. I see.
That's because it shows more evidence of (short-term) cooling in the Dark Ages, BEFORE the US emitted all those evil pollutants. (Of course, the LONG-TERM role of the varying solar output that actually CAUSED the Dark Ages, Medieval Warm Period, and Little Ice Age ARE NOT mentioned.
North of the equator - that is why all the sulphates are found north.
The equator forms a wind barrier, most of the time.