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Ice Age

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A coccolithophore bloom north of the Scandinavian peninsula, as seen from space. Ocean currents and eddies can be seen in the swirls of aquamarine water.

A ride on the 800,000-year roller coaster

MIT's Darwin Project offers an unconventional explanation for the dramatic peaks and valleys in atmospheric carbon dioxide over recent ice ages.

August 2, 2013

The Southern Ocean, the vast belt of water circling Antarctica, is a turbulent part of the ocean conveyor, where vast reservoirs of heat and carbon may rise to the surface, interacting with the atmosphere. The region, researchers say, plays a critical role in climate change.

A climate window in the Southern Ocean

An updated circulation model reveals the Southern Ocean as a powerful influence on climate change.

February 28, 2012

Scanning electron microscopy images reveal a microscopic, oval-shaped shell with tapered ends, from which an organism’s feet may have extended. The surface of the shell is made up of tiny bits of silica, aluminum and potassium, which the organism likely collected from the environment and glued to form armor.

Life after Snowball Earth

New fossils suggest rapid recovery of life after global freeze.

June 15, 2011