Arctic sea ice had its weakest winter buildup since record-keeping began 47 years ago. Scientists say it's a symptom of ...

This year's Arctic sea ice peak is the lowest in the 47-year satellite record, according to data released by the US National ...

Sea ice extent is at record, and near record, lows for this time of year in both polar regions, leaving the planet ...

In "Ends of the Earth," Neil Shubin travels north and south to explore the frontiers of polar science and history.