Out of Africa Theory Settlement Patterns Out-of-Africa Theory Neanderthal-Human Interaction Early Humans in Europe Archaeological Findings Neanderthals Genetic Exchange Neanderthal Interactions Eurasia Homo Sapiens Ancient Civilizations Adaptation Pleistocene Era Europe European Prehistory Ecological Changes Denisovan Migration Hominin Dispersal Cultural Practices Americas Archaeological Evidence Southeast Asia Neanderthal Extinction Neanderthal Migration