As scientists, we are used to having our work questioned.
Anyone who has ever attended a scientific meeting knows that scientists are hardest on themselves. When we present a new research paper at a conference, colleagues often interrupt us with sharp, pointed questions. Those questions are asked in good faith, in an attempt to make our work better and advance scientific knowledge.
But scientists who work on climate change are increasingly finding our work questioned by politicians and ideologues who simply don’t like our findings. Too often, politicians start with their conclusion, then work backwards to find the evidence—any evidence, regardless of its quality—to back up their preferred policy positions. And the fossil fuel industry is happy to fund those who attack our work, because our research has pointed to the burning of their products—oil, coal, and natural gas—as the primary drivers of climate change.
For more than a decade, I’ve found myself targeted and attacked by political interests who feel threatened by some facts my colleagues and I uncovered about our changing climate. We have received menacing e-mails, including anonymous death threats. I’ve received a package containing an Anthrax-like white powder (the FBI determined that it was a hoax), and someone threw a dead rat on the doorstep of another colleague. As the political conversation around climate change has become more polarized, the attacks have intensified.
Now, however, my colleagues and I are fighting back, a task that is made easier because the findings that have made us the targets of climate change deniers have only been further validated as CO2 levels continue to rise and the world continues to warm. This is also true when it comes to the research behind the so-called “hockey stick” graph, which is what first prompted attacks on me and my colleagues.
That graph, unveiled in a 1998 paper, showed global temperatures level or decreasing for 1,000 years (the shaft of the stick) and then spiking upward in the past century (the upturned blade.) Those rapidly rising temperatures tracked increases in atmospheric levels of carbon dioxide, which coincided with the world’s growing use of fossil fuels.
For better and worse, our graph became an icon of climate change because it was relatively easy to understand. That made it a threat to opponents of dealing with global warming, who invested significant time and resources attacking our research. At first, my colleagues and I responded as we would to any scientific question. We evaluated the claims about our data and methods and responded in the scientific literature. But instead of questioning our claims in good faith, our critics approached the hockey stick like a politician approaches a piece of legislation he or she doesn’t like. Their goal was to dismantle our findings, regardless of the facts. By 2005, U.S. Rep. Joe Barton (R-Texas), one of the biggest recipients of fossil fuel funding in the House of Representatives, sent my colleagues and me letters demanding that we open our professional and personal lives to an investigation from his committee.
These attacks obscure the bigger picture. Climate science is like a vast puzzle. Individual papers like ours are a single piece of that puzzle. Scientists are still filling in pieces the puzzle, but we can see a relatively complete picture of our climate that tells us the Earth is warming, human activity is the cause, and that we are locking in substantial rises in sea level, increasingly intense heat waves and floods, and threats to global fresh water and food resources as we continue to burn fossil fuels.
But politicians and ideologues try to make climate science out to be a house of cards. Remove one card and the whole thing falls down. The hockey stick papers, they decided, must be one of those cards and their response was to attack our research and challenge our integrity. I call it the “Serengeti strategy,” in which predators look for what they perceive as the most vulnerable animals in a herd.
In 2005, U.S. Rep. Sherwood Boehlert (R-New York) had the courage to stand up to Joe Barton. Boehlert asked the National Academy of Sciences—an institution created by Abraham Lincoln to advise the government on scientific matters—to evaluate the “hockey stick” and related studies. The academy found our conclusions to be valid and appropriately understood them to be one piece of the puzzle. In fact, dozens of “hockey stick” studies using different data and methods have verified and extended our original findings in the past several years.
Barton took a different tack. He commissioned a statistician from George Mason University to produce a report for his committee to misrepresent our research. When the National Academy of Sciences issued its report, which validated our findings, fossil fuel industry allies in Congress like Sen. James Inhofe (R-Oklahoma) falsely claimed that the report disproved our research. Inhofe has named me and 16 others scientists as people he’d like to investigate if he again gains control of a committee in the Senate. Inhofe has just published a book detailing the “global warming conspiracy” he believes is behind climate science research. As a climate scientist, I can assure everyone that my colleagues and I simply aren’t that organized.
Like Barton, Virginia Attorney General Ken Cuccinelli issued a subpoena in 2010 demanding personal correspondence from me and dozens of other scientists from my time at the University of Virginia. Thankfully, groups like the Union of Concerned Scientists, the American Association of University Professors, and several free speech organizations urged the university to fight Cuccinelli’s demands, and the university did. Cuccinelli lost his case before the Virginia Supreme Court last month. While we don’t know how much Cuccinelli’s office spent on this witchhunt, the university spent more than $600,000 in private funds defending scientists’ right to privacy.
Inhofe and Cuccinelli both drew their inspiration from an incident in November 2009, when climate scientists had their emails stolen from the University of East Anglia and misrepresented through a coordinated public relations campaign orchestrated by a who’s who of climate denial front groups. Why attack the University of East Anglia? It is one of four major government and academic centers that track global temperatures. Again, the Serengeti strategy at work: no matter that all the data from these four institutions tell us the world is rapidly warming, and that numerous independent investigations later concluded that the scientists whose e-mails had been hacked, including mine, had not engaged in fraud or scientific misconduct.
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