One million years ago, Antarctica was basically where it is now, at the south pole. Back then, snow fell, much as it does today and over the course of a hundred years or so the fallen snow glaciated, forming an ice sheet. Over the course of a million years, the process repeated itself 10,000 times to form an ice sheet 3 kilometers thick.
Now a group of scientists have drilled down to the million year old ice and removed it. The ice will have information regarding the climate back then as well as the atmospheric conditions. Past research has already shown that methane and CO2 levels are at their highest atmospheric levels of the last 650,000 years. The scientists hope to find microorganisms in the ice as well to offer clues to earlier forms of life and evolution.
Million Year Old Ice