The deep Pacific is a climate time capsule from the ‘little ice age,’ 19th century ship records show

A global cooling trend known as the “little ice age” ended centuries ago, but it lives on in the deepest parts of the Pacific Ocean, researchers reported here last week at a meeting of the American Geophysical Union. What’s more, this oceanographic time capsule could be helping blunt some of today’s human-driven warming, at least for now.