http://www.msl-chemcam.com/index.php?menu=inc&page_consult=t... - Mars 101#.UvuUrHbfMdc
We have there only ¿three? moving robots there, but IIRC one is not moving and one is not working. And there are some (maybe 10) full static platforms, but I don’t know if any of them is working now.
Sojourner stopped working in 1997, Spirit stopped working in 2010, and both Opportunity and Curiosity are still moving around.
EDIT: source: http://www.cnn.com/2013/08/06/tech/innovation/mars-curiosity...
The article is completely misleading. The presence of water on Mars is not remotely controversial -- it has been detected in a dozen different ways.
Link: http://en.wikipedia.org/wiki/Water_on_Mars
Quote: "Water on Mars exists today almost exclusively as ice, with a small amount present in the atmosphere as vapour.[1] The only place where water ice is visible at the surface is at the north polar ice cap.[2] However, abundant water ice is also present beneath the permanent carbon dioxide ice cap at the Martian south pole and in the shallow subsurface at more temperate latitudes.[3][4][5][6] More than five million cubic kilometers of ice have been identified at or near the surface of modern Mars, enough to cover the whole planet to a depth of 35 meters.[7] Even more ice is likely to be locked away in the deep subsurface.[8]"
Hay-o!