A robot descended to a depth of nearly 4.000 meters below the Arctic and found a living oasis that changes everything we knew about the ocean floor.

The discovery of the Freya Hydrate Mounds, at a depth of 3.640 meters in the Greenland Sea, reveals the deepest cold gas seep ever recorded, with intense biological activity, methane emissions, and direct implications for the global carbon cycle and ... [7112 chars]