This natural-color image of sea ice off East Antarctica's Princess Astrid Coast was acquired April 5 by the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite. Via NASA, here's a bit more about what's depicted in this striking photograph:
Not all ice is created equal: this view of the Amundsen Gulf has open ocean, older thick ice, young thin ice, fresh snow and even broken brash ice adrift at sea.
Scientists use a range of techniques—from satellite observations to drilling holes—to measure sea ice thickness. Usually, such efforts look down at the sea floor. But, by equipping an underwater drone with upward-looking sonar, researchers were able to create the first high-resolution 3D maps of Antarctic sea ice.
This emaciated polar bear, a 16 year-old male, was recently found over 150 miles away from its normal range. Experts believe that a lack of sea ice forced the bear into unknown territory as it desperately searched for food — a quest that came to a grim conclusion.
Sea ice levels shrink every summer, but this year has been different. Yesterday brought some big news: the extent of Arctic sea ice has officially reached a record low. What's more, it's done so weeks earlier than ever before — and it's not done shrinking yet.