Global map showing the track where Lauren Kipp measured seawater chemistry

Aboard the icebreaker Healy, Lauren Kipp measured seawater chemistry across the Arctic Ocean and found that levels of radium-228 have almost doubled over the past decade in the middle of the ocean. The radium was transported from land and shallow continental shelves by currents such as the Transpolar Drift. The surprising finding is evidence that rapid climate change is causing large-scale changes along the Arctic coast. These coastal changes, in turn, have significant impacts on the Arctic food web. (Illustration by Natalie Renier, © Woods Hole Oceanographic Institution)