Last update: February, 2015.
You'd be forgiven if you thought that there's a serious debate among scientists about whether human activity is driving climate change. That's because the oil industry and other groups have been spending literally hundreds of millions of dollars trying to convince the public of exactly that. How could one feel the climate is really changing if even the scientists can't agree?
But the reality is that the scientific community has reached a solid consensus on the issue: There's not a single national or international scientific body that disagrees that the earth is warming, that we're causing it, and that the effects are likely to be catastrophic (e.g., flooding, drought, wildfires, etc.). And every single survey done of scientists about it shows that the overwhelming majority agree on all those counts as well. A disagreement between scientists exists only in the minds of those who have bought into the propaganda. It doesn't exist here in reality.
One of the deniers' tactics has been to try to paint those who believe in climate change as liberals. (So believing that scientists know a thing or two about science makes you a liberal?) But the truth is that about most Republicans believe in human-caused climate change. (source 1, 2, 3, 4) That includes nearly half of Republican legislators, too. Trust in science isn't the provence of only liberals, not by a longshot.
97–98% of the most published climate researchers say humans are very likely causing most global warming. (source)
For years, climate deniers tried to argue that the scientists got it wrong. That somehow, the deniers' understanding of science was superior to that of the world scientific community. (I think the word for that is "arrogance".) More recently, many deniers have switched to an argument only slightly less ridiculous: that climate change is a hoax. That is, nearly all the climate scientists in the world are lying about the issue, just to get grant money. The problems with that idea should be obvious:
But there's a more basic problem with the argument that the worldwide climate science community is intentionally giving the wrong answers in order to get grant money: there isn't any evidence for it. Rather, the deniers just state their assumption as though it were fact. It's a good tactic, because it forces the other side to waste time defending an idea for which absolutely no evidence has been advanced. Look how much space I devoted to it in this article, even though the argument has nothing at all to back it up.
Another favorite argument of deniers is that the original phrase was "global warming", but liberals switched it to "climate change" because the latter sounds scarier. In fact, both terms have been in similar use for decades, because, as anyone with even a cursory understanding of the issue knows, the two terms refer to two separate, distinct phenomena. Global warming is the process of the globe heating up. Climate change is the disruption of the climate that results from the warming. It's a rather simple distinction. When deniers insist that the term was changed for nefarious purposes, they unwittingly reveal a great deal about their lack of understanding. (more)
Yet another myth is that scientists used to believe that we'd have global cooling, but now they're saying it's global warming, so we can't trust the scientists because they can't make up their minds. The truth is that the idea of global cooling never had mainstream support from the scientific community. Ever. That contrasts sharply with global warming, which is supported strongly by scientists of every stripe all over the globe.
Perhaps the most commonly heard try from deniers is "The climate has always been changing." They say this as though they've made some sort of point. Indeed, the climate has always changed, but slowly. The thing is that climate is changing now rapidly, in relative terms. So their argument is a failure to understand degree. It's like saying:
What most people don't know is that there's been a well-funded machine that's been trying to confuse the public about climate change for decades. It's the same tactic that the tobacco industry used to fight the science linking smoking with health problems: sow doubt in the public's mind. As a 1960s internal tobacco company document said:
"Doubt is our product, since it is
the best means of competing with the 'body of fact' [linking
smoking with disease] that exists in the mind of the general
public. It is also the means of establishing a controversy...”
Not only is it the same
tactics, in many cases it's actually the same people.
After Big Tobacco lost in its efforts to deny the science about
smoking and health problems, they tried to deny the science
between health problems and secondhand smoke, starting
in the 1990s. And many of the people working to attack the
science for the tobacco industry, are now the same ones trying
to attack the science of climate change, trying to convince the
public that the science isn't settled and that the scientists
are in disagreement. (source)
If you're paying attention, you'll notice that both sides have claimed that money has influenced the science. There are two differences, though. The deniers are claiming that virtually all the world's climate scientists have been compromised, while the supporters point out that only the handful of denier-scientists have mostly received funding from big oil and denier thinktanks. That is, it's plausible that a few scientists could have been compromised. It's not plausible that nearly all of them were. Second, the deniers' claim that climate change scientists are lying never comes with any evidence. On the other side, we have the $1.2 milion that Dr. Soon received from big oil, and the documents in which he described his papers and his congressional testimony as "deliverables".
I'm not a scientist. And neither are the people who argue with me about climate change. The difference between us is that I'm trusting the consensus of the world scientific community. They're trusting Rush Limbaugh and Exxon-Mobil. Now, I suppose I could decide that the world scientific community is wrong, but I'm just not that arrogant.
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