Well, if a supervolcano goes off and brings on an ice age, I'd say that hundreds of millions of deaths is much likelier than a million, because of food shortages and consequent wars.
On the other hand, what good would a few days' warning do?
Just another reason not to outsource food production to foreign countries.
True.
I just returned from Hawaii and visited the lava flows. I quickly learned that there is nothing you can do about molten rock. It sort of goes wherever the hell it wants to and the ocean can't even stop it.
Very impressive indeed.