Signs of Water on Mars Might Actually Be an Indication of Something Else

First Martian life likely broke the planet with climate change, made themselves extinct - The new theory comes from a climate modeling study that simulated hydrogen-consuming, methane-producing microbes living on Mars roughly 3.7 billion years ago

2022 Mars Society Convention - Virtual Attendee Instructions - The Mars Society

Early Mars habitability and global cooling by H2-based methanogens