An asteroid killing off the dinosaurs is pure speculation almost propagandized like climate change.
There is no direct evidence they were killed by asteroids. I made this comment here once before, and someone came back at me by saying “yes, they can prove there were asteroids”. I agree, many biggy’s hit earth back then, but there is not a stitch of evidence an asteroid fired the fatal bullet.
An asteroid will send airborne gobbs of earthly debris. Much of it will fall in seconds. It’s all heavier than air or it would already be in the air. The finer stuff will stay airborne much like fine volcanic ash, but like volcanic ash, it will fall. The sun light will be interrupted for weeks, not years; much will be over the oceans. Some areas the size of continents would likely be spared.
I mean really, if we want to go down fairy tale lane, I personally think gun toting Christian white males did it. Seriously, why not? They get blamed for everything else.
Like they shouldn't? I particularly resent the fact that I might live until I'm 85 instead of dying at 40 from a bacterial infection.