As to the "debate" (ain't a debate when 99% of scientists agree on a scientific phenomenon) well i really don't understand why people would not accept what scientists from all over the world are saying. Especially when the consequences could be huge to our way of living.
I get why a the oil and coal industry denies it, but apart from that, why do regular people think they should have an opinion on whether or not they should "believe" it? That's beyond me
This issue has to deal with something called the deficit model. Scientists are inclined to believe that all of the worlds problem's can be solved by simply providing the facts. However, there are a few problems with this:
1. People need reasons to learn facts, and that reason is (usually) not different facts, but rather an emotional connection to a subject.
2. People tend to already have general, basic understandings of knowledge, known as "lay expertise"
3. People can quickly learn information when the need, and are motivated, to.
This largely explains the dissonance between the Public and Scientists on this debate. So although scientists may agree 99%, they are a small group of people who are struggling to convince the other 99% of the world, especially those people who like oil-backed politicians, to be just about as certain as them. In fact, many conservatives trust their politicians more than they do scientists, simply because they believe scientists have more of an agenda than politicians do.