Ice cores hold the secrets of what our planet was like millions of years ago, in bubbles preserving greenhouse gases from that time. A Princeton University-led team just revealed the date of what is now the oldest ice core we've ever dated, and it's 2.7 million years old. Beating the previous record by around 1.7 million years, the ice core could potentially help scientists determine what set off the ice ages. Related: Via Science Images via
from Inhabitat - Green Design, Innovation, Architecture, Green Building http://inhabitat.com/oldest-ice-core-ever-dated-reveals-hidden-clues-to-ancient-earths-atmosphere
via Inhabitat
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