Research in Lake Superior reveals how sulfur might have cycled in Earth’s ancient oceans
The sulfate poor waters of Lake Superior could provide insights on the biochemistry of Earth's early ocean. Credit: Alexandra Phillips
Geochemist Alexandra Phillips 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.…