A new study suggests that bacteria may respire more carbon dioxide from the shallow oceans to the air as oceans warm, reducing the deep oceans’ ability to store carbon.

The Columbia paleoclimatologist and marine geologist has shaped our understanding of the how ice ages fluctuate and how sea levels change; in this interview Raymo talks about why the miles and miles of marine sediment samples in Lamont’s Core Repository are so important.

New research co-authored by Columbia University scientists shows that the Larsen C ice shelf—the fourth largest ice shelf in Antarctica—experienced an unusual spike in late summer and early autumn surface melting in the years 2015 to 2017.

A new study shows that the slowdown of a major ocean current system around 950,000 years ago correlated directly with a huge buildup of carbon in the deep Atlantic Ocean, and corresponding decline of carbon in the air.

The report calls for the creation of a new network to provide guidance to state, local, and tribal governments on how to use the National Climate Assessment and other sources of science to get things done in their communities.