04-October-2007, 10:42 PM
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Join Date: Sep 2003
Location: The beautiful north coast (Ohio)
Posts: 17,776
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From the Climate FAQ at grist.org.
Quote:
Objection: Global warming is happening on Mars and Pluto as well. Since there are no SUVs on Mars, CO2 can't be causing global warming.
Answer: Warming on another planet would be an interesting coincidence, but it would not necessarily be driven by the same causes.
The only relevant factor the earth and Mars share is the sun, so if the warming were real and related, that would be the logical place to look. As it happens, the sun is being watched and measured carefully back here on earth, and it is not the primary cause of current climate change.
As for the alleged extraterrestrial warming, there is extremely little evidence of a global climate change on Mars. The only piece I'm aware of is a series of photographs of a single icy region in the southern hemisphere that shows melting over a six year period (about three Martian years).
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More information, with some links and some discussion, on that website.
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