This combination of images provided by NASA's Phoenix Mars Lander's Surface Stereo Imager on Sunday, June 15, left, and Wednesday, June 18, 2008, right, or Sols 20 and 24, shows sublimation of ice in the trench informally called "Dodo-Goldilocks" over the course of four days. In the lower left corner of the left image, a group of lumps is visible. In the right image, the lumps have disappeared. (AP Photo/NASA/JPL/CALTECH)

Read Article