US adventurer Victor Vescovo has become the first person to visit the deepest points in every ocean. His fifth and final dive in a prototype submersible was made to the bottom of the Arctic's ...

Its sinking was caused by thick sea-ice, which pierced the hull and sent it to the deep. The irony ... His original plan had been to explore the Arctic, north of Alaska, but when the Canadian ...

The Southern Ocean is the second smallest ocean. The smallest and shallowest ocean is the Arctic Ocean ... It is nearly 11,000 metres deep. It is so deep that if you put Mount Everest, the ...

Some rocks from the Arctic Ocean floor suggest that the extent of depletion and heterogeneity in the Earth's mantle may be greater than we thought. Partial melting of the Earth's mantle is one of ...

Greenpeace has launched an Arctic expedition to ... Arctic waters to exploration. Deep sea mining, which involves scooping up metals and minerals from the ocean’s seabed, is a nascent industry ...