Sir John Ross lowers a line more than a mile into the North Atlantic and hauls up worms ... discovers that the Mid-Atlantic Ridge conceals a long rift valley, which turns out to be part of a ...

Photograph by David Doubilet The Sargasso Sea, part of the vast whirlpool known as the North Atlantic gyre, often has been described as an oceanic desert—and it would appear to be, if it weren ...

The chain runs down the middle of the Atlantic Ocean (surfacing ... is created varies from one location on the ocean ridge to another. Between North America and Europe, the rate is about 2.2 ...

which is located between the Greenland Sea and the North Atlantic Ocean. Until now, it was widely believed that Iceland formed around 60 million years ago when the mid-Atlantic ridge – the ...