Arctic ice continues to disappear

The headline from Eric Holthaus’ latest piece is arresting: The Last Time There Was This Little Arctic Ice, Modern Humans Didn’t Exist.

Ice has been a relatively constant feature of the Arctic for most of the past 36 million years, but there have been some gaps. Scientists aren’t exactly sure what happened during the most recent major ice-free period, but it’s often considered an analog to our future, warmer Earth. The only difference is, this time, the gap in Arctic sea ice is being caused by us.

• climate crisis
• Eric Holthaus