From the living architecture of modern human DNA, researchers at UC Berkeley have uncovered the genetic shadows of two populations who vanished without leaving a single recoverable bone — one that walked alongside our African ancestors over 800,000 years ago, another whose lineage stretches back nearly two million years. The discovery, published in Science in July 2026, did not emerge from excavation but from computation, suggesting that the story of who we are is written not only in stone and sediment but in the very genomes we carry. It is a reminder that extinction is rarely total, and that