New research from the University of South Carolina presents compelling evidence from ocean sediment cores that bolsters the controversial Younger Dryas impact hypothesis. The discovery of elevated platinum levels, an element scarce on Earth but abundant in cosmic debris, within these 13,000-year-old core samples points toward a comet impact as the trigger for the abrupt climate cooling event. This finding directly challenges traditional explanations that attribute the Younger Dryas to purely terrestrial phenomena, reinvigorating the contentious debate over a global cataclysm shaping humanity's ancient past.