|Atlantic Current can shut down for centuries, disrupting climate|In: Science (Washington). American Association for the Advancement of Science: New York, N.Y. ISSN 0036-8075, more
The last time the planet had a breather between ice ages, the supposedly reliable flow of deep water southward down the Atlantic slowed or even stopped, only to recover centuries later. That's according to new isotopic analyses of tiny seafloor fossils. If the Atlantic were to respond in the same way to global warming, it could alter climate near and far and dramatically raise sea level along the North American coast.