Re: Definition of "A Very Bad Day"
I've seen that before, originally appeared in a National Geographic show about ELE impacts.
It is chilling, and quite accurate from what I've heard.
But, even that catastrophic event would not be likely to kill everything. Subsurface bacterial and fungal organisisms, those that live at great depths under extreme conditions of heat and stressful chemestries, have a very good chance of surviving.
Not that we, as a species would care much, we'd be gone, gone, gone.