"If the shooting of fish in barrels offends you, look away."
Warns Nature columnist Oliver Morton, of his inquiry into "The sceptical 'argument'...that global warming on Earth should be seen as a natural, as opposed to anthropogenic, phenomenon "because of temperature changes on uninhabited planets erstwhile skeptics attribute to solar variability by default.
idea... regained a certain prominence
in February when...National Geographic's
website dredged up the belief of a Russian astronomer, Habibullo
Abdussamatov, that the warming on Mars shows that the Sun is driving
climate change on Earth."
The problem with this Op-ed chestnut is that solar heating falls off with the square of planetary distance. So a 1 degree increase in Neptune's temperature requires a vastly greater change in solar output than does warming the Earth by 1 degree. About 29% to be exact. You would think solar cell salesmen would have noticed a 100 watt per square yard change , not to mention Coppertone copy writers.