I've been lurking in this thread for a while and it has given me much
interest and not a little amusement, but I have a question.

At risk of sticking my nose in from UK, What is the scenario regarding the
apparently/allegedly overdue supervolcano brewing up under Yellowstone, and
its
aftermath?

If what I've heard is correct, it might equally involve this side of the
pond.

Or is that a whole different thread? .

Steve