The cold permafrost of Antarctica houses bacteria that thrive at temperatures below freezing, where water is icy and nutrients are few and far between. Oligotrophs, slow-growing organisms that prefer environments where nutrients are scarce, could provide clues as to how life could exist in the permafrost of Mars. In this vein, scientists have been studying the lethargic bacteria from the Dry Valleys of Antarctica, a row of snow-free valleys that represents one of Earth’s most extreme desert environments.

The research was published in the journal FEMS Microbiology Ecology and was funded by the NASA Astrobiology Science and Technology for Exploring Planets program.