I have a new article published on the ESA website:
"The surface area of Mars is approximately 145 million square kilometres, almost the same area as the Earth's land masses. Imagine having to choose just one spot to land on and call home. Selecting the right place could mean the difference between achieving your scientific goals and failure. That's one of the tasks facing ESA and Roscosmos with their 2018 ExoMars mission.
Fortunately, planetary scientists have now spent decades studying Mars. They have used an array of increasingly sophisticated orbiters and rovers, and accumulated a vast library of images and information. Sifting through these data will help them guide the mission to a scientifically interesting place on the planet. ..."
You can read the full article here.