Typical mid-20th century concept of human evolution, now debunked. I created this illustration for "Under a Purple Sky," the anthropological appendix to Fire Wolf.
I don't know about the rains and how they might have compared to other parts of the world. I suppose Europe in general receives more rain than other regions, and this was probably true 40,000 to 300,000 years ago, too, so Neandertals probably experienced more rain than other homo species. But Homo sapiens neanderthalensis also had larger *brains* than Homo sapiens sapiens by around 14 percent. If you compare the average Sapiens skull with the average Neandertal, you will see the Neandertal is larger.
Wait, neanderthals had bigger rains???