They use the words "potential effects", "could", etc. the tone is very different and expresses an appropriate level of scientific uncertainty with a very detailed examination of climate, it's complexity, links, etc. the whole page needs to be revamped!

 Certainly the Wikipedia page is free. But if you're interested in maintaining a good page, especially on Global Warming, it should be longer than a page on the entire collection of pages related to Mars and all other planets combined -due to it's importance, and not seem such a matter of opinion and vengence against the right, or whatever it is the tone of the admins are directed towards.