Pack ice, Arctic, Antarctic & Polar

Pack ice, any area of sea ice (ice formed by freezing of seawater) that is not landfast; it is mobile by virtue of not being attached to the shoreline or something else. Pack ice expands in the winter and retreats in the summer in both hemispheres to cover about 5 percent of the northern oceans and

Antarctic Sea Ice Hits Once-Per-2.7-Million-Year 'Six Sigma' Event

Sea Ice - Woods Hole Oceanographic Institution

Pack Ice Oceanwide Expeditions

See the otherworldly beauty of Earth's polar regions

Understanding climate: Antarctic sea ice extent

The Arctic and Antarctic saw record warmth and ice melt in 2022

Arctic sea ice winter peak in 2022 is 10th lowest on record

Six ways loss of Arctic ice impacts everyone, Pages

Polar bears are inbreeding due to melting sea ice, posing risk to

Arctic sea ice shrinks to second-lowest summer minimum on record

Polar experiments reveal seasonal cycle in Antarctic sea-ice algae

The Arctic could become 'ice-free' within a decade, study says

The desperate race to create a protection zone around the rapidly

The Arctic Circle: Polar portal to the Arctic