A record-breaking Antarctic drill reveals ancient climate clues that could reshape predictions of Earth’s future.

A team of international scientists has successfully drilled the deepest rock and sediment core ever recovered from beneath an ice sheet, capturing roughly 23 million years of Earth’s climate history in frozen mud and rock. The 228-meter core was extracted from beneath about 523 meters of ice at Crary Ice Rise on the edge of the West Antarctic Ice Sheet, a region that holds enough ice to raise global sea levels by several meters if it were to melt.
Unlike ice cores, which only extend back hundreds of thousands of years, this sediment core preserves direct physical evidence from much warmer periods in Earth’s past. Scientists believe it could help clarify how sensitive Antarctic ice is to warming and whether certain temperature thresholds trigger irreversible ice loss.








