I saw a documentary on fossils they found in the US. Volcanoes. Animals nearby died from suffocation by the ash,
or the ash depth made it impossible to move to food and water so they starved.
Animals further away died from "black lung" (actual medical term is the longest word in English - volcanopneumothora...).
So, no, it wasn't humans or SUVs. But you already knew that.
volcanopneumothora
disestablismentalism
Well, the 2nd word is longer when you write in fonts where each letter is the same width. :)
The whole issue, of course is
pseudointellectualism