The Rapid Melt-Away of the Arctic Ice Cap Facilitates the First North Pole Circumnavigation
The opening of the both the North West Passage and the North East Passage is a very recent development in the Arctic. Back in the 19th century these sea passages were always clogged by the immensely thick accumulations of perennial sea ice that survived from one year to another. The thinning of the Arctic Ocean sea ice has been observed since [...]
