Portrait of Sallie W. "Penny" Chisholm

Sallie W. "Penny" Chisholm

Penny Chisholm is Lee and Geraldine Martin Professor of Environmental Sciences at the Massachusetts Institute of Technology. As a biological oceanographer, her research interests include ocean ecology, the evolution and comparative genomics of marine cyanobacteria and the viruses that infect them, iron and phytoplankton growth, and ocean fertility. Her work on the abundant marine phytoplankton, Prochlorococcus, first described in 1988, has led to a deeper understanding of microbial ecology and the oceanic carbon cycle.

Read interview transcript