Re:Um... duh? (Score 0)

Um...duh...its not "basic astronomy"...try metereology instead tough guy. And to further how wrong you are, its not at all obvious. The key word here is "warming"...or what is causing the increase in temperature. We already know that water retains heat, but scientists are puzzled as to why the average global temperature has been RISING, which was previously thought to be more or less solely the increase in greenhouse gasses.