A frozen archive reveals climate six million years ago.

Deep in the Allan Hills region of East Antarctica scientists have uncovered ice that dates back roughly six million years, and it contains sealed air bubbles that offer a direct window into Earth’s ancient atmosphere and climate. The find shatters previous records and brings insights into a period when the planet was significantly warmer, sea levels were higher, and climate systems were different from today. Since this ice remained remarkably undisturbed the story it tells about greenhouse gases and temperature shifts over millions of years feels fresh and urgent.



