The scientific consensus on human evolution, supported by extensive fossil and genetic evidence, traces modern humans (Homo sapiens) back hundreds of thousands of years, emerging from a population in Africa rather than a single pair. Fossils like those of Australopithecus (around 4-2 million years ago), Homo habilis (over 2 million years ago), and early Homo sapiens (about 300,000 years ago) illustrate a gradual process with branching lineages, including interbreeding with Neanderthals and Denisovans. Genetic studies show that human diversity could not have arisen from just two individuals in the recent past; the effective population size never dropped below thousands, ruling out a literal genetic bottleneck from one couple as sole progenitors.
No archaeological evidence directly supports the historical existence of Adam and Eve as the first humans. The biblical Garden of Eden may draw from ancient Mesopotamian myths about fertile regions where agriculture began, but no artifacts or sites confirm a literal paradise or original pair. Claims of "Mitochondrial Eve" and "Y-chromosomal Adam" refer to common ancestors for specific DNA markers (living 150,000-200,000 years ago), not a lone couple or biblical figures—they coexisted within larger populations.