personally rooting for a gamma-ray burst within 8000 light years (which incidentally would have been traveling since the start of recorded human history)

the entire upper atmosphere would be turned to nitrogen dioxide

even the side of earth not facing the burst would have all life die very quickly because the ozone layer would just be GONE, so now all lethal ultraviolet solar radiation gets in too

solves ALL our problems

unfortunately Congress might survive a few more months in their underground bunkers but they are eventually doomed too