On Mar 2, 2006, at 7:16 AM, [EMAIL PROTECTED] wrote:
All the planets are warming: http://www.space.com/scienceastronomy/mars_ice-age_031208.html
"A model that fits the data has three layers near the surface," said William Boynton of the University of Arizona, Tucson, team leader for the gamma-ray spectrometer instrument on Odyssey. "The very top layer would be dry, with no ice. The next layer would contain ice in the pore spaces between grains of soil. Beneath that would be a very ice- rich layer, 60 to nearly 100 percent water ice."
Boynton almost has it right. The top layer is mostly crustal lichen, which seals gaps and prevents the water from leaving the soil. 8^)
Horace Heffner
