On the Surface

Claire Johnson explains her studies of microbial communities living on seaweed mats in the Atlantic Ocean’s Gulf Stream and how they cycle nitrogen.

Trapped on the Surface

In the past decade, the Cape Fear River has become more susceptible to algal blooms — a potential public health concern for more than 1.5 million people relying on the river as a drinking water source. UNC researcher Nathan Hall thinks droughts and slow flows are the culprit, and aims to predict when future blooms will occur.