Air bubbles trapped in Antarctic ice for 3 million years have given scientists their first direct look at Earth’s ancient atmosphere, and the findings challenge a long-held assumption. While the ...

Frozen air from Antarctica is giving scientists a longer look at a climate mystery that has lingered for decades: why Earth cooled so much over the past 3 million years even though its greenhouse gas ...

Ancient Antarctic ice is revealing a surprising new chapter in Earth’s climate story, stretching back 3 million years. By analyzing tiny pockets of trapped air and rare gases, scientists have ...

New analyses of ancient ice from Antarctica and the air contained inside it are extending the history of Earth's climate records and expanding researchers' understanding of how the planet has changed ...