We have two volcanoes up, first Kilauea in Hawaii and second Volcan de Fuego in Guatemala.
Both are causing widespread devastation and putting quantities of dust etc. in the air.
Is there a third to come and perhaps a big one? There are a number of possibilities and "might be's".
Given global history in the past it has happened before and could happen again.
If it did it would end the debate on global warming.
And the global economy.