It's absolutely astonishing. Suddenly, the feasibility of colonising Mars has just cranked up a notch or two.
Lack of water is only one of the problems.
Lack of a magnetic field means that cosmic radiation and solar wind particles reach the surface, so radiation levels are higher than on earths surface.
The thin atmosphere and lack of ozone means there is no shield against solar UV radiation.
The soil is full of perchlorates, which are highly toxic, so groing crops on martian soil would require much more than just mixing manure.
That just off the top of my head.
I would love to see a permanent colony in Mars within my lifetime, but the technological advances needed are yet to take place.