'A crazy year up north:' Arctic sea ice shrinks to 2nd-lowest level on record - USA TODAY

'A crazy year up north:' Arctic sea ice shrinks to 2nd-lowest level on record  USA TODAY

'A crazy year up north:' Arctic sea ice shrinks to 2nd-lowest level on record - USA TODAY
'A crazy year up north:' Arctic sea ice shrinks to 2nd-lowest level on record  USA TODAY