There are two new interesting articles at Space.com about water on Mars again. The first one is showing that relatively recently there probably were huge
glaciers in repeated periods:
SPACE.com -- Strange Scars on Mars Suggest Recent Glaciers
photo © NASA/JPL/MSSS
The other one is about the found of remnants of possible
hydrothermal springs:
SPACE.com -- Mars Features Resemble Hydrothermal Springs
photo © NASA/MRO/HiRISE/C. Allen, D. Oehler
