'Four-billion-year chill' on Mars
By David Whitehouse,BBC News, July 21, 2005
[news.bbc.co.uk]

Mars Has Been in the Deep Freeze for the
Past Four Billion Years, Study Shows
Source: California Institute of Technology,
Press Release, July 21, 2005, [www.spaceref.com]

the paper being dicussed is:

Shuster, D. L., and Weiss, B. P., 2005, Martian
Surface Paleotemperatures from Thermochronology
of Meteorites. Science, vol. 309, no. 5734,
pp. 594-600 (July 22, 2005) [www.sciencemag.org]

"The past is never dead. It's not even past."
William Faulkner, Act 1, Scene III, Requiem for a Nun (1951)