I am happy, happy, happy!
And so is the whole membership of the Astronomy Society of PR!
What happened to the water in Mars is not known completely, but it's obvious the atmosphere was thick once, for in order to have liquid water, you need to have a large atmospheric pressure. So the question is then: What caused the bulk of the atmosphere to disappear, and what caused the temperature to go down?
One of the theories is that water is still in its liquid state, deep underground. And where there's water, there is LIFE.