Once you get past the cover illustration of a standard issue Neanderthal woman – fastback forehead, straight from central casting – author Clive Finlayson delves into a corrective chronicle turning conventional scientific wisdom on its head. Neanderthals, long thought of as rough and rudimentary, were not really subject to extinction by any direct superiority from our upstart ancestors, supposedly more nimble and in-the-know, who emerged from Africa some 100,000 years ago. Instead, and as detailed in the revelatory The Humans Who Went Extinct, Homo sapiens were just at the right place at the right epoch. In a process analogous to the survival of the luckiest, Finlayson finds that "Serendipity is central to the account" of our ancestors, "a marginal people" who found their fortune in a fluke, albeit one on a grand scale.
In Finlayson’s sweeping panorama of the events that led to their migration into Europe, he conjectures about the occurrences of contact, the 'brushes with bipeds,' between Homo neanderthalenis — "large, tough and intelligent people" and culturally akin to Homo sapien — when the two populations, after having been genetically separated for half a million years, ultimately stumble upon each other in the Middle East around 130,000 years ago. With no proof of hybridization, the author declares that the matter of mating "remains a mystery."
But in addition to culture and interaction, evolutionary ecologist Finlayson, an eminent expert on Neanderthals and Director of the Gibraltar Museum and Adjunct Professor at the University of Toronto, does consider the factors of climate, ecology, and migrations of populations, seamlessly interweaving these interacting topics throughout Humans Who Went Extinct. Overarching all, Finkayson reminds us, is the “human story [that] unfolds against a backdrop of deteriorating climate” with a bent toward an increasingly unstable earth. Moreover, climate is “the architect that molded our intelligence, our biological makeup, in fact everything that made us human."
Migration and ecology both come into equitable play in the retelling of the Central Asian population that fans out into Europe around 30,000 years ago, prompted by a response that biologists call ecological release; in the lack of competition for the literal lay of the land, a population “adapts to a new, untapped environment and spreads rapidly.” Extending his cases in point worldwide, Finlayson cites example after example of similar pressure valve vents and exoduses, spurred on by “major demographic and geographical surges in our history”: from Arabia our ancestors moved into India, then across south-east Asia following grasslands opening up as climate changed; the rapid migration into and throughout Australia; and the Bering land bridge, the gateway to North America.