Global warming alarmists are fond of invoking the authority of experts against the skepticism of supposedly amateur detractors -- a.k.a. "deniers." So when one of those experts says that a recent report on the effects of climate change is "worse than fiction, it is a lie," the alarmists should, well, be alarmed.
The latest contretemps pits former U.N. Secretary General Kofi Annan, now president of the Geneva-based Global Humanitarian Forum, against Roger Pielke, Jr., an expert in disaster trends at the University of Colorado. Mr. Annan's outfit issued a lengthy report late last month warning that climate change-induced disasters, such as droughts and floods, kill 315,000 each year and cost $125 billion, numbers it says will rise to 500,000 dead and $340 billion by 2030. Adding to the gloom, Mr. Annan predicts "mass starvation, mass migration, and mass sickness" unless countries agree to "the most ambitious international agreement ever negotiated" at a meeting this year in Copenhagen.
Even on its own terms, the numbers here are a lot less scary when put into context. Malaria kills an estimated one million people a year, while AIDS claims an estimated two million. As for the economic costs, $125 billion is slightly less than the GDP of New Zealand. Question: Are targeted campaigns using proven methods to spare the world three million AIDS and malaria deaths a year a better use of scarce resources than a multitrillion-dollar attempt to re-engineer the global economy and save, at most, a tenth that number? We'd say yes.
But the Annan report deserves even closer scrutiny as an example of the sleight of hand that so often goes with the politics of global warming. Unlike starvation, climate change does not usually kill anyone directly. Instead, the study's authors assume a four-step chain of causation, beginning with increased emissions, moving to climate-change effects, thence to physical changes like melting glaciers and desertification, and finally arriving at human effects like malnutrition and "risk of instability and armed conflicts."
This is a heroic set of assumptions, even if you agree that emissions are causing adverse changes in climate. Take the supposedly heightened risk of conflict: The authors suggest that "inter-clan fighting in Somalia" is a product of climate change. A likelier explanation is the collapse of a functioning Somali government and the rise of jihadists in the region.
Enter Mr. Pielke, who, we hasten to add, does not speak for us (nor we for him). But given the headlines the Annan report has garnered, his views deserve amplification. Writing in the Prometheus science policy blog, Mr. Pielke calls the report a "methodological embarrassment" and a "poster child for how to lie with statistics" that "does a disservice" to those who take climate change issues seriously. ...