Scientists for decades theorized that the moisture on Mars was evaporated through the atmosphere. However the Mars Rover has discovered something very different! Mars has no tectonic plates like our earth so the planet cannot recycle water into the atmosphere through volcanism like here on earth! So the drying of the crust on Mars is permanent and the rocks under the surface retain the water. God created our earth as well as Mars but gave our earth very unique characteristics to support life! Also the volcanic actions on earth affect the temperature of the earth’s atmosphere! They are like your thermostat in your house! The fruit cakes call it global warming! James & Hamsa Sasse. IndiaJesusLovesYou.com