Research in Lake Superior reveals how sulfur might have cycled in Earth's ancient oceans
A scientists has sulfur on her mind. The yellow element is a vital macronutrient, and she's trying to understand how it cycles through the environment. Specifically, she's curious about the sulfur cycle in Earth's ancient ocean, some 3 billion years ago.
https://www.sciencedaily.com/releases/2023/11/231116150905.htm