Models of glacial flow and retreat rely on estimates of glacial ice viscosity, the measure of the ice's resistance to flow.
A discovery in Greenland reveals that its ice sheet collapsed 120,000 years ago and then unexpectedly rebuilt itself ...
Underneath its quiet, cool, icy-white façade, Antarctica hides a fiery cauldron thronged with hundreds of volcanoes. Little by little, the blazing heat spuming from these volcanoes weakens the ...