That's right. If something of this magnitude were to occur in our lifetimes, then here's your survival agenda:
1) Get right with God. Quick, if you have to.
2) Pray that you live to see the next sunrise.
3) Bend over and give your keister a pre-emptive kiss goodbye.
Then what are we waiting for? I say let's do it.
"... opening years of the next great ice age. Can you spell D-O-O-M?"
Yes. D-U-M-E