Re: The latest results from Odyssey.
I was just reading this one that I found this morning (I hope it's still there!).
I thought this was interesting:
[Scientists had thought ice in the soil away from the permanently frozen polar caps seeped in from the atmosphere, diffusing into the pores of the soil. But Boynton said there seems to be more ice than the estimated 40 percent pore space in the soil could hold. Perhaps annual snowfalls once deposited the stuff, he said.]