Earth ChangesIceland ‘doomed’ if Atlantic Ocean current collapses: Nation declares ‘existential threat’ from modern-day ice age and begins planning for disaster Posted on November 24, 2025 by Administrator Iceland has designated the potential collapse of a major Atlantic Ocean current system an existential threat and has begun planning for worst-case scenarios. The Atlantic Meridional Overturning Circulation, or AMOC, is like a giant ocean conveyor belt that moves warm water from the tropics to the northern Atlantic, with the Gulf Stream playing a key role, acting as the main current carrying that warm water along the US East Coast to the north.