I've seen this story a few times in the past few weeks, Vox sums it up We’ve never seen global sea ice levels this low before and has the latest version of the scary chart. Basically, we're doomed.
But ever since September, as the red line shows, global sea ice has utterly collapsed, following a pattern never seen before. On January 14, total sea ice extent was at its lowest level since satellite records began in 1978 — and likely the lowest it’s been for thousands of years. And yes, global warming is an important part of the story here.