global warming - updated 6/21/2007

I posted this on a blog in http://www.cbsnews.com/ where of course many of the posts are from people who don't understand the subject, and in many cases, are just plain silly jerks.
I'm putting it here so that if I want to, I can copy it instead of typing it again!

It is a fact of physics that some gases have a greenhouse effect. See the post by ubrew12 for a good explanation of what that means. It is a fact of physics that humans are causing an increase in these gases. Whatever natural processes there are that are affecting the earth's temperature, this man-made increase in greenhouse gases must cause the earth to be warmer than it would be w/o the extra gases, just like the inside of a car sitting in the sun with the windows up will be hotter than the outside temperature, whatever it is. Yes, when the temperature outside the car is hotter, it will be hotter inside the car, but that doesn't mean the windshield glass does not have a greenhouse effect.
octavianfdlr says that Mars and Jupiter have warmed. The implication seems to be that this is caused by the Sun. If this is the case, what about the other planets? After all, Mercury and Venus are closer to the sun. From my experience, this "fact" might be something that was made up by people like Mobil/Exxon.
Incidentally, Venus is so hot because of a runaway greenhouse effect, caused by water vapor, another greenhouse gas. Venus is closer to the sun than the Earth, which caused an increased evaporation of water, and water vapor is a greenhouse gas. So that caused warming, which caused more evaporation, etc.

(later)

Today is the summer solstice. If the greenhouse effect does not exist, then I guess we could expect the temperature to start getting cooler, since the amount of sunlight will be getting less. Also, we would expect the temperature to start getting warmer after the winter solstive, Dec. 20 or 21. Of course, that doesn't happen
.http://cires.colorado.edu/events/lectures/ruddiman/
William Ruddiman proposes that we would be in an ice age by now if it hadn't been for global warming caused by human activity, going back thousands of years ago.

processor2 What does this have to do with "America's fault"? This is a problem accidently caused by humans. If we continue, it won't be accidental any more, it will be because of irresponsible people who are too lazy and uncaring to change their ways; that would be unpatriotic.

I found this on the Nasa web site, for Mars.I couldn't find a reference to Jupiter warming.Could you provide us with a link?http://www.nasa.gov/centers/ames/research/2007/marswarming.html
05.14.07
For the past 30 years, NASA scientists have been using high-tech satellite equipment to study features on the face of Mars. It appears a slight change in the planet’s surface luster has caused its temperature to rise.
To determine the extent of surface changes on Mars, scientists took images from the Viking (launched 1975) and Mars Global Surveyor (1996) satellite missions and mapped them into a climate model developed at NASA Ames Research Center. They discovered that a wind-whipped, dusty surface has a measurable effect on the amount of sunlight that is reflected by the planet. The results of this research show that an increase in darkened surface areas may account for a one degree Fahrenheit rise in the surface air temperature of the planet.
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It has been noted that one of the reason's the earth is warming faster than older computer models predicted, is that as ice melts, the ground underneath, which is darker, is exposed, and thus does not reflect as much solar radiation back into space as the ice did.