In reality Earth has far more water than it needs. How about we share some of it with Mars and I bet a viable atmosphere will appear.
Originally posted by Cobaltic1978
I think it confirms that Mars was once able to support life, but it's pretty clear from the images being beamed back, it is a barren wasteland. In order for life to be sustained it will have to be under artificial means until we find a way of generating an atmosphere to replicate Earth's.