Ankle-deep on Mars BBC

If the water-ice hidden just below the Martian surface were to melt, it would create a planet-wide sea ankle-deep, scientists have said. The latest findings from the Mars Odyssey spacecraft now in orbit around the Red Planet were released here at the annual meeting of the American Association for the Advancement of Science (AAAS). The spacecraft’s instruments have been trained on the Martian soil for nearly a year.