Complex modeling experiments conducted at Arizona State University (ASU) and the University of Denver Colorado help illustrate the fate of Neanderthals.
"The interdisciplinary team of researchers used archeological data to track behavioral changes in Western Eurasia over a period of 100,000 years and showed that human mobility increased over time, probably in response to environmental change. According to Barton[at ASU], the last Ice Age saw hunter-gathers, including both Neanderthals and the ancestors of modern humans, range more widely across Eurasia searching for food during a major shift in the Earth’s climate."
"The scientists utilized computer modeling to explore the evolutionary consequences of those changes, including how changes in the movements of Neanderthals and modern humans caused them to interact – and interbreed – more often."
ASU, U Colorado archaeologists find clues to Neanderthal extinction
Neanderthal demise due to many influences, including cultural changes
Culture Enabled Neanderthal Contribution to Human Genome