> Chicxulub has been estimated as at least 20 billion Hiroshimas - and perhaps as much as four times that. That set fire to most of a hemisphere. And it still w

> Chicxulub has been estimated as at least 20 billion Hiroshimas - and perhaps as much as four times that. That set fire to most of a hemisphere. And it still wasn't a complete obliteration/sterilisation event. Unless you were a dinosaur living at the time :) Thanks for the cluebat, I've put an update on my post to note the math is all bollocks.