People are still panicking and saying that the North Pole will be ice free this year, and that this is something to worry about because this is the first time this has happened.
I say not so; SSN-578 (USS Skate) managed it on 17th March 1959. Check the 5th Photograph down.
There is also anecdotal evidence that a Chinese fleet sailed through a largely ice free arctic around 1276CE.
The more things change, the more they stay the same.