Lets get this straight
The study looks at 11,944 papers. Of those, only 3894 endorsed anthropogenic global warming. Still, the study is used by some to say that there is a 97% consensus amongst scientists. No, there isn't. If we were going to count papers, we would have to say that the consensus is that there ISN'T a consensus. However, that wouldn't be an accurate statement. One would have to tabulate the AUTHORS of ALL of the papers (not just the ones that expressed an opinion) and discard any duplicates, and use those numbers to compute a consensus. All we really have is a study that says that 100% of the people who have published papers concluding that AGW exists believe that AGW exists, that 100% of the people who have published papers concluding that AGW doesn't exist believe that AGW doesn't exists, and that the vast majority of papers published do not draw a conclusion on AGW.
I'm not going to say whether AGW exists or not - I'm old enough to remember when climate scientists were using the same historical data to say that we were entering into another ice age, and enough of a realist to know that politicians and businessmen will spin any facts to achieve and support whatever their near-term goal happens to be at the moment.
Is the earth warming? Probably, and it probably has since the end of the last ice age - but decade by decade numbers may significantly vary from the historical average. Are glacier's shrinking? Well, as they are the product of an ice age, I would have expected them to start shrinking 10's of thousands of years ago. Did humans cause it? Probably not, since there weren't enough of us back then to initiate the process - about 4 million worldwide (less than half of the current population of London today) by most estimates. Are we accelerating it? It is certainly possible, though it seems that cattle introduce more greenhouse gases into the atmosphere than any human-built machinery - but since humans are the ones raising the cattle we can probably include those in the human-originated counts.
The reality is that there are more large non-human mammals and other animals on the planet today than there were 1000 years ago, just as there are more humans. We consume oxygen and produce carbon dioxide. Even if we turned off all machinery that introduces carbon into the atmosphere, and stopped building fires for heat and cooking, the reduction of CO2 being introduced would not be enough to turn the tide against the projections made based on the current "accepted" models. Even if we decided that euthanize half of the human populations "for the good of future generations" it wouldn't be enough - we would have to kill off non-human populations too and even then it may not be enough.
So, it comes down to whether you choose to believe the models or not. I choose to believe that the models are wrong, that they don't take into account enough of the negative feedbacks to produce an accurate picture - and because NOBODY is saying what the optimum temperature of the earth is, or whether we are above or below it. If we are above it, we are screwed, if we are below it, then why are we trying to stop it?
That does not mean that I choose to ignore climate change - I think that it should be studied, but that the emphasis should probably be on figuring out the best ways to help the human population of the planet adapt to the inevitable if the models are proven right, because there is NO WAY that you are going to get the human population to give up all of their modern energy-guzzling appliances.
Go ahead and flame me, downvote me, or whatever - but it still won't change anything. The study of climate change today has moved from an ecological movement of socially conscious people into a money and power grab by the corrupt. Go ahead and fine the companies that emit carbon - but then ask where the money goes, and where it comes from. In the end, it comes from our pockets, and into theirs, with "they" being a diverse mixture of businessmen and politicians who really don't care about the climate as much as they care about their bank statements.