I’m not a scientist personally, nor do I study the subject extensively, but from what I can gather, a great majority of the reputable scientific institutions that spend all of their time studying the subject matter have concluded that global warming exists, and that it is likely man-made.
Some deniers point to conspiracy, and say that all of the world’s major scientific institutions have been “bought out” by governments in order to make the case for a carbon tax (yes, ALL of the world's major scientific institutions). But if you actually use your brain for a moment you will come to the realization that this conspiracy – just like many others – is too grand to have any basis in reality.
Perhaps if the split was 50/50 between the world’s science institutions, I might have second thoughts about not siding with the dissenters. But it’s not.
Therefore, I’m putting my money on what the majority of science says, rather than the opinion of a random internet guy (CrusaderFrank) who is generally extremely right-leaning.
Yep it's called HARRP AND MAINTAINED BY THE PEOPLE YOU TRUST.