Eller har det ???
DMI:
http://ocean.dmi.dk/arctic/plots/icecover/icecover_current.png
Nordex:
http://arctic-roos.org/observations/satellite-data/sea-ice/observation_images/ssmi1_ice_ext.png
http://arctic-roos.org/observations/satellite-data/sea-ice/observation_images/ssmi1_ice_area.png
Dette århundred:
http://wattsupwiththat.com/2009/04/26/ice-at-the-north-pole-in-1958-not-so-thick/
Plioscene (8000 år siden):