Debate over global warming? What debate?
One peculiar thing about the so-called debate over global warming is that the dissension is mostly among folks who have nothing directly to do with climate science.
Michael E. Mann, director of the Earth System Science Center at Pennsylvania State University, EXPLAINS:
The overwhelming consensus among climate scientists is that human-caused climate change is happening. Yet a fringe minority of our populace clings to an irrational rejection of well-established science. This virulent strain of anti-science infects the halls of Congress, the pages of leading newspapers and what we see on TV, leading to the appearance of a debate where none should exist.
In fact, there is broad agreement among climate scientists not only that climate change is real (a survey and a review of the scientific literature published say about 97 percent agree), but that we must respond to the dangers of a warming planet. If one is looking for real differences among mainstream scientists, they can be found on two fronts: the precise implications of those higher temperatures, and which technologies and policies offer the best solution to reducing, on a global scale, the emission of greenhouse gases.
It is not an uncommon view among scientists that we potentially compromise our objectivity if we choose to wade into policy matters or the societal implications of our work. And it would be problematic if our views on policy somehow influenced the way we went about doing our science. But there is nothing inappropriate at all about drawing on our scientific knowledge to speak out about the very real implications of our research.
My colleague Stephen Schneider of Stanford University, who died in 2010, used to say that being a scientist-advocate is not an oxymoron. Just because we are scientists does not mean that we should check our citizenship at the door of a public meeting, he would explain. The New Republic once called him a “scientific pugilist” for advocating a forceful approach to global warming. But fighting for scientific truth and an informed debate is nothing to apologize for.
If scientists choose not to engage in the public debate, we leave a vacuum that will be filled by those whose agenda is one of short-term self-interest. There is a great cost to society if scientists fail to participate in the larger conversation — if we do not do all we can to ensure that the policy debate is informed by an honest assessment of the risks. In fact, it would be an abrogation of our responsibility to society if we remained quiet in the face of such a grave threat.
This is hardly a radical position. Our Department of Homeland Security has urged citizens to report anything dangerous they witness: “If you see something, say something.” We scientists are citizens, too, and, in climate change, we see a clear and present danger. The public is beginning to see the danger, too — Midwestern farmers struggling with drought, more damaging wildfires out West, and withering record summer heat across the country — while wondering about possible linkages between rapid Arctic warming and strange weather patterns, like the recent outbreak of Arctic air across much of the United States.
The urgency for action was underscored this past week by a draft United Nations report warning that another 15 years of failure to cut heat-trapping emissions would make the problem virtually impossible to solve with known technologies and thus impose enormous costs on future generations. It confirmed that the sooner we act, the less it will cost.
How will history judge us if we watch the threat unfold before our eyes, but fail to communicate the urgency of acting to avert potential disaster? How would I explain to the future children of my 8-year-old daughter that their grandfather saw the threat, but didn’t speak up in time?
Those are the stakes.