This is why they say we Neanderthals have "communication problems" with the humans.
I don't know how to say it any more simply. It doesn't matter because Saps has trouble following along no matter how you phrase it.
The Sun has gone dormant. No sun spots. Nothing to be scared of, this is the cyclic end of the Holocene. We should have another one just like the past 40,000 year cycle in another million years or so. Nothing to worry about, it is a natural cycle on this planet. Until then, the planet has gone back to normal ... which means cold. Neanderthal weather. This is the natural temperature on the planet ... well, actually it is still pretty warm. It ain't got "natural" yet ... but it is a barrel of monkeys if you are a Neanderthal. You really can't keep a Neanderthal interested at anything above 80 degrees below. It's just too muggy and humid above that. 80 degrees below is time to listen to chestnuts roaring on an open fire, it's Christmas every day for a million years after that.
I'm sorry if I am not communicating this idea simply enough. I can't make it any simpler.
The "Hu-Mans" (originally a Sumerian word that meant "A weakling sired for slavery by a serpent") just can't seem to understand reality. It's not their forte. You can't blame them, they act like they were designed to cart stones up the sides of pyramids with a whip at their backs and fight in games of war while Melonheads sat in the bleachers and threw slurpees at their generals for making bad decisions that cost them wagers.