Some fresh news from the AGU Fall convention in San Francisco...

Odyssey:

Bill Feldman showed detailed data suggesting that even in near equatorial regions, Mars has 3-10% H2O in the regolith, buried just a little deeper than the Viking spacecraft could dig. The near-surface layer is a mere 1% water, or less, but more H2O at depth.

BTW "water" = ice.

Early Mars:

Warm and wet models just died. We all got together and nobody likes them any more. ("We" = lots of serious Mars researchers, plus me). Early Mars is now seen as cold and dry, but has a dusting of snow that melts in some rare favourable seasons, producing a trickle of water down the crude valley systems.

That's as warm and wet as it gets, folks...

See Space Daily for more, in a day or so...