From Spencer Weart, Hastings- on-Hudson, New York, US
Your description of traces of an isolated population of early humans, never more than a few hundred individuals, has them “scattered over a distance of 1500 km” from Britain to Poland. This is more likely to point to a single, cohesive clan that, over centuries, migrated either east or west over this distance. Such a small, inbred population would have accumulated many genetic defects over time, making their extinction in the harsh glacial climate almost inevitable(5 July, p 30).
