The right-wing nutjobs over at Free-Market News Network, the name says all you'll need to know, dug up some goofball Russian scientist, Habibullo Abdussamatov, who claims that Mars is also experiencing a climate warming & we can blame it all on radiation from the sun. What the free-marketeers fail to mention is that the aforementioned Russian has been isolated by the majority of the scientific community. Media Matters For America has the goods.
After explaining Abdussamatov's theory, the article reported that the theory has "not been well received by other climate scientists." The article first quoted "Colin Wilson, a planetary physicist at England's Oxford University" saying that Abdussamatov's "views are completely at odds with the mainstream scientific opinion" and that they "contradict the extensive evidence presented in the most recent IPCC [Intergovernmental Panel on Climate Change] report." The article added that "[t]he conventional theory is that climate changes on Mars can be explained primarily by small alterations in the planet's orbit and tilt, not by changes in the sun" and that "most scientists think it is pure coincidence that both planets are between ice ages right now."
Finally, the article reported that "the biggest stumbling block in Abdussamatov's theory is his dismissal of the greenhouse effect," and quoted Amato Evan, a climate scientist at the University of Wisconsin, Madison, who said that "without the greenhouse effect there would be very little, if any, life on Earth, since our planet would pretty much be a big ball of ice."