In the interests of maintaining the moral high ground with respect to relying on evidence, experiment and reason as the best guides to Truth I feel honor bound to point out an answer to a question on Quora posted recently by Richard Muller:
What are some widely cited studies in the news that are false?
That 97% of all climate scientists accept that climate change is real, large, and a threat to the future of humanity. That 97% basically concur with the vast majority of claims made by Vice President Al Gore in his Nobel Peace Prize winning film, An Inconvenient Truth.
The question asked in typical surveys is neither of those. It is this: “Do you believe that humans are affecting climate?” My answer would be yes. Humans are responsible for about a 1 degree C rise in the average temperature in the last 100 years. So I would be included as one of the 97% who believe.
Yet the observed changes that are scientifically established, in my vast survey of the science, are confined to temperature rise and the resulting small (4-inch) rise in sea level. (The huge “sea level rise” seen in Florida is actually subsidence of the land mass, and is not related to global warming.) There is no significant change in the rate of storms, or of violent storms, including hurricanes and volcanoes. The temperature variability is not increasing. There is no scientifically significant increase in floods or droughts. Even the widely reported warming of Alaska (“the canary in the mine”) doesn’t match the pattern of carbon dioxide increase; and it may have an explanation in terms of changes in the northern Pacific and Atlantic currents. Moreover, the standard climate models have done a very poor job of predicting the temperature rise in Antarctica, so we must be cautious about the danger of confirmation bias.But under no circumstances should you interpret this as being synonymous with, "The climate alarmists are wrong and there's nothing to worry about." To put this answer in the proper context, go to Muller's Berkeley Earth project page and read the summary of findings. There you will find the following:
...the average temperature of the Earth’s land has risen by 1.5 °C over the past 250 years. The good match between the new temperature record and historical carbon dioxide records suggests that the most straightforward explanation for this warming is human greenhouse gas emissions.
A previous Berkeley Earth study, released in October 2011, found that the land-surface temperature had risen by about 0.9 °C over the past 50 years (which was consistent with previous analyses) and directly addressed scientific concerns raised by skeptics, including the urban heat island effect, poor station quality, and the risk of data selection bias.In other words, the rate of increase is itself increasing. Dramatically. This is one of the many things that make this process so insidious. There are huge time lags (by human standards) and multiple integrals involved. If we wait for it to become apparent that climate change is causing serious problems it will be much too late to prevent catastrophe.
Also worth noting:
...the Berkeley Earth team was able to conclude that over 250 years, the contribution of solar activity to global warming is negligible.
Some of the scientists on the Berkeley Earth team admit surprise that the new analysis has shown such clear agreement between global land-temperature rise and human-caused greenhouse gases. “I was not expecting this,” says Richard Muller, “but as a scientist, I feel it is my duty to let the evidence change my mind.”