Looks like Eugine got most of what I was going to say. Toasty, there's the exact same graph that you just struck down from Wiki, within the very quote you posted. And I might add, I did provide the source of the information on that graph. Sourceless items on Wikipedia are not worth anything, true, but when something is backed up by a reliable internet source like what I posted, you can't just say "Well wiki is unreliable" because that's not Wiki, that's the main source.
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# Present evidence suggests that temperatures at many, but not all, individual locations were higher during the past 25 years than any period of comparable length since A.D. 900. However, uncertainties associated with this statement increase substantially backward in time.
This quote from your own article as well, directly states that of all the years between 900 AD and 2007 AD, the last 25 have been the hottest. These have been the hottest years we have witnessed in scientifically recorded history. We did not have anyone measuring before 900 AD, so it's not going to account for say, the creation of life on earth, or the creation of earth itself, but within all reasonable comparisons for this discussion, this is the hottest we as a species have ever encountered and been aware of. The "uncertainties" it refers to are exactly what I just said: nobody knows for certain how hot it was before we started recording this information.
On top of all that, your list does not, as you claim, give other reasons for Global Warming. It gives all the reasons for climate change in the past. These climate changes, as I have just shown, are nothing compared to what's happened in the last 25 years. There is obviously something different going on here, something new, and something more horribly wrong. If you leave a margin of error when performing a math equation, and you end up with an answer outside of the margin of error, would you expand the margin of error, or try to fix the math problem? We could certainly change the text books to say that we're still doing the right thing, and the world is just being a problem, or, we could admit that we're doing something wrong since things are so far out of balance, and actually
try to fix it.
I really don't understand how you can think, when the most solid of facts back up the idea of global warming, that it's not happening. Remember the hole in the ozone layer? We actually fixed that, that was awesome. We decided to cut down on the chemicals we knew were causing problems in the atmosphere, under the United Nations even I think, and everything got better, because we addressed the problem. But even more importantly, we realized something huge: We created the problem in the first place. If we can do that again, and realize that we're the source of Global Warming, and that it does really exist, we can fix it. We just need to get out of denial about it, and so far, it seems to be working. It is spreading, people are finally realizing it, and eventually, we'll all understand it as a threat. I just hope that happens before it becomes too huge of a problem to fix.