Air and particles formed hundreds of thousands of years ago are trapped in the ice What is probably the world's oldest ice, dating back 1.2m years ago, has been dug out from deep within Antarctica.

New images from the North Sea show never-before-seen landforms that were carved by a single, colossal ice sheet 1 million years ago and subsequently buried beneath a thick layer of mud ...

This transport of northward flowing surface waters and southward flowing deep waters is what oceanographers call Atlantic Meridional Overturning Circulation (AMOC) (Oppo & Curry, this Topic Room).