Scientists have pulled a 6 million-year-old chunk of ice out of Antarctica — the oldest directly dated ice ever found — and it's helping them to reconstruct Earth's ancient climate.
The record-breaking ice, along with air bubbles trapped inside, is more than double the age of the previously oldest-known ice samples, which are around 2.7 million years old, according to a new study published Oct. 28 in the journal PNAS.
