Can you name a single respected scientific organization that rejects anthropogenic global warming or the reports from the IPCC?
Surely you see the problem with this question?
Not really. Care to explain?
You have respected scientific journals like "Nature" and "Science" that have published scientific breakthroughs in many fields of science for decades. Are they suddenly wrong on climate change, after even the computer you are using right now is a result of research being published in those and other journals? Is all science just a scam (despite all the things it has done for you)?
You cant say, any group of scientists that doesn't believe in AGW is disreputable and AGW is real because no reputable group of scientists argues that it isn't. Its circular.
Of course this does rely on the assumption that if i told you about a group of scientists and then told you that they are AGW skeptics than you would consider them disreputable because of this fact. But i think that is a pretty safe assumption.
This isn't about who I personally find reputable, but rather about their position and standing in the scientific community.
Let's look at "Nature". One of the world's most prestigious scientific journals. Countless scientific breakthroughs have been published in Nature in most fields of science. Are you saying that a) Nature is being fooled, or that b) they are part of the conspiracy to fool everyone else?
Or the American Geophysical Union - apparently the world's largest scientific society of earth and space scientists - which has published a position statement on AGW. Long story short, they accept the consensus. Are they ignorant, or are they part of the conspiracy?
Of course, none of this explains a strange phenomenon where those who reject AGW will often find the "final nail in the coffin" - a paper from mainstream scientific sources that they claim disprove AGW. It happens quite frequently. There was a new one just the other day. It's a massive contradiction, of course. "Papers that don't support AGW aren't allowed. Just the other day a new paper from a respected scientific journal was published which is yet another nail in the coffin for AGW."
Sigh.