On the ice sheets of Greenland, photographer James Balog stood witness to a geological reckoning: a glacier the size of lower Manhattan breaking away and dissolving into the sea over the course of seventy-five minutes. What he captured on film was not merely a record of destruction, but the moment a skeptic became a witness — and a witness became an archivist of warning. Across fifteen years and 1.5 million images, Balog has built a testament to a transformation already underway, leaving behind evidence for a future that will inevitably ask what we saw and what we chose to do with the seeing.