http://science.slashdot.org/article.pl?sid=07/03/03/2310250&from=rss
Since, according to Mr Gore and the like, Global warming is caused by cars and mans other activities, and has nothing to do with nature......it seems beyond doubt that the martians are all bombing around in Range Rovers. Better get some trackers on them before Mars ends up with horrible effects like liquid water.
DOT