A research group from Cardiff School of Earth and Ocean Sciences has published new evidence which could solve the puzzle of why Antarctica went into the deep freeze 34 million years ago - and it comes from a surprising place.

Using echo-sounding equipment to create images and maps of areas below the ocean floor, researchers have begun to unravel a new story about the Antarctic Ice Sheet.

University of Alaska Fairbanks climate scientist John Walsh is among the lead authors of the second volume of the Fourth Assessment Report from the Intergovernmental Panel on Climate Change.