Global warming might be why humans are here and Neanderthals are not.
Though there are very few Neanderthal skulls, two of them that have sinuses, have an unusual, bony protrusion in their sinuses, which led to the theory that this would have slowed and warmed the passage of very cold air into their trachea. And in very cold weather, this would give them a decided advantage.
However, when the world warmed, this feature, it was theorized, could have resulted in Neanderthals having perpetual and debilitating sinus infections. And might have possibly led to their extinction.
Interesting... curious what is known about this.
Have you seen the movie "Ao, the last Neanderthal"? This somewhat cave-man meets cave-girl love story for the most part adheres to facts known about that time 30,000 years ago. One aspect it showed was a prevalent condition affecting Ao's dad and Ao as well with the symptom of bloody nose and mucus passageways. I was wondering if there was something backing this part of the story... your post indicates that there was.