The history of the climate of Mars
Ralf Jaumann is head of the Planetary Geology department at the DLR Institute of Planetary Research. He is the experiment manager and co-investigator for the HRSC on Mars Express. In this interview he is focusing on the climatic history of the Red Planet.
More information:
Webspecial "Mars: a planet full of riddles"
http://www.dlr.de/en/mex10 and
http://www.dlr.de/en/mars