Over the course of decades or even centuries, Earth’s landscape can appear relatively static, with mountains and valleys seemingly anchored firmly in place. Viewed over a longer timescale, however — on the order of hundreds of thousands of years — the Earth’s topography becomes a rippling, shifting, changing tableau. Rivers and valleys, in particular, form […] … learn more→

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