Roy,

did you read the article, or did you just see the headline? It is nothing
to do with CO2 levels but is talking about how tiny particles of dust
trapped in ice in polar regions may store heat and cause little pockets of
liquid water (hence the idea of a special type of green house effect) and
may allow life.

Stan

"Roy" wrote in message
...
It seems that the basic question is that are the rising C02 levels the
cause of the warming or as a result of the warming? One thing is for
sure, man has had nothing to do with climate change on Mars.

http://news.softpedia.com/news/Green...e-129065.shtml