It could be that cooling and warming phases are a natural pattern on Mars, and have nothing to do with the output of the Sun. Just because a system is at equilibrium does not mean it has to be static.
Of course, the same could be true of the Earth. So there could well be an explanation for Global Warming on Earth that does not have anything to do with the output of the Sun or human activity.
It is this possibility that is consistently denied by the global warming political activist class.
PLEASE DO NOT CHANGE THE TITLE FACTS TO PLEASE YOU [sic] OWN BIAS Just finished reading Michael Crichton's State of Fear -- and I recommend it to all. Altough it is fiction, it is based on extensive research into the theory and political application of "Global Warming".
The footnotes and references exposing the left's manipulation of statistics to achieve a "State of Fear" are quite revealing.
>If BOTH Mars and Earth are simultaneously experiencing global
>warming, then clearly the SUN is the cause.
>WRONG. What it says is that mars is warming and man made co2
>is not the cause. Earth could still be warming via man made
>co2, via the sun, or some combination of the two and/or other factors.
>
>PLEASE DO NOT CHANGE THE TITLE TO PLEASE YOU OWN BIAS
>
>ORIGINAL TITLE IS
>
>Mars Ski Report: Snow is Hard, Dense and Disappearing
>
The energy must come from the sun or from radioactivity.
Other effects can only be short term.
However, the significance of the article is that it demonstrates (to those who ignored the fact) that climates change without any interference from vectors such as human activity.
This is mainly inconsequential as 'climate change' is not about science but about politics: Eco-Marxism. 'The environment' is merely the vehicle used to camoflage the self-interest of the Eco-Marxists. It is much easier to promote one's politics-of-envy when it is camouflaged as the protection of innocents: The fluffy bunnies. Eco-Marxists like to pose as protecting fluffy bunnies from evil capitalists and Big Oil but their real objectives is the same as any other Marxist: To relieve their own psycho-pathogens, to relieve their own angst at the social-voltage which capitalism induces in those who are less successful.
Climate change Millenarianism is nothing new. It goes back much longer than the 1970s global cooling model:
http://www.businessandmedia.org/specialreports/2006/fireandice/fireandice.asp
Shoot-downs of each new global warming silliness can be found here:
http://www.junkscience.com