World ‘A crazy year up north’: Arctic sea ice shrinks to 2nd-lowest level on record September 21, 2020September 21, 2020Doyle Rice, USA TODAYComments Off on ‘A crazy year up north’: Arctic sea ice shrinks to 2nd-lowest level on record The amount of summer sea ice in the Arctic has been steadily shrinking over the past few decades because of man-made global warming, experts say.