That's because step 1 of the "skeptics" is to impugn the motives and credentials of those who believe in global warming. It's the same exact tactics used by creationists.
They can't argue scientifically, because the vast majority of climatologists, geologists, and scientists of other persuasions believe the Earth is warming and we're at fault. So they attack scientists in general, pointing out every time one has been wrong (global cooling is popular, though that was never a widely held theory) and the scientists are forced to defend their credentials.
That's why we hear that side of the argument so much. Not because scientists don't want to debate the data, but because their primary opposition (and one with serious political clout) isn't interested in data.
And also it's a good sound bite. Literally every major scientific body endorses man made global warming. You have to admit, that sounds pretty impressive and overwhelming. Doesn't make them right, but does make for easy to digest TV viewing.
They can't argue scientifically, because the vast majority of climatologists, geologists, and scientists of other persuasions believe the Earth is warming and we're at fault. So they attack scientists in general, pointing out every time one has been wrong (global cooling is popular, though that was never a widely held theory) and the scientists are forced to defend their credentials.
That's why we hear that side of the argument so much. Not because scientists don't want to debate the data, but because their primary opposition (and one with serious political clout) isn't interested in data.
And also it's a good sound bite. Literally every major scientific body endorses man made global warming. You have to admit, that sounds pretty impressive and overwhelming. Doesn't make them right, but does make for easy to digest TV viewing.