Well, would you assert that the industrial rise in CO2 levels, as such, will have consequences comparable to one of the worst mass-extinction events, caused by

Well, would you assert that the industrial rise in CO2 levels, as such, will have consequences comparable to one of the worst mass-extinction events, caused by gigantic volcanic eruptions lasting millions of years? I hold that unlike causes have unlike effects. The Permian-Triassic extinction started with and involved many more destructive elements than merely increased CO2 and global warming. Unlike what we are experiencing today.