In 2012, Curiosity examined the dusty soils that gave it an insight into the processes that drive the dry and cold environment that dominates Mars today.
In an environment far too dry to sustain much life, the flora and fauna have adapted, enabling them to glean just enough moisture from the ocean fog that spills inland at dawn.
The effect is achieved by trickling seawater over porous cardboard screens -- called evaporators -- which cool and humidify the dry desert air, creating a favorable growing environment for crops.