Habitability
The German space agency discovered Earth lichens to survive in simulated Mars conditions. The simulation based temperatures, atmospheric pressure, minerals, and light on data from Mars probes. An instrument called REMS is designed to provide new clues about signature of the Martian general circulation, microscale weather systems, local hydrological cycle, destructive potential of UV radiation, and subsurface habitability based on ground-atmosphere interaction; it landed on Mars as part of Curiosity (MSL) in August 2012. Microrganisms make up 80% of Earth's biomass.
Read more about this topic: Mars