Ice Age Refugees

Roughly 26,000 years ago, the ocean stood four hundred feet lower than it does today. A Europe-sized landmass rose from the South China Sea. Plains the size of Great Britain filled the Persian Gulf and the North Sea. People lived on all of it - hunting, fishing, burying their dead, trading across hundreds of miles.
Then the ice melted, and the sea came back.
Ice Age Refugees is the complete story of that double exile - from the cold, then from the water. It follows humanity from the population crises of the deep past through the refuges where our species survived its deepest freeze: a Spanish community maintaining alliances across four hundred miles at the coldest moment of the ice age; highland refuges in Ethiopia and Tibet; the land bridge where the ancestors of all Native Americans waited out the freeze; the drowned archives that now lie beneath the North Sea.
It also tells of the other humans - the Neanderthals, the Denisovans, the small island species who lived beside us and vanished - and of what they left behind in our genes, our languages, and our oldest flood stories.
Every claim graded. Every controversy given both sides. Nothing invented. Nothing omitted.
The ice age made refugees of everyone. Everyone alive today is what the survivors built.