(courtesy Indur Goklany)

In a recent column Ellen Goodman says, "I would like to say we're at a point where global warming is impossible to deny. Let's just say that global warming deniers are now on a par with Holocaust deniers, though one denies the past and the other denies the present and future." See http://www.boston.com/news/globe/editorial_opinion/oped/articles/2007/02/09/no_change_in_political_climate/

In so doing, she reveals that she doesn't comprehend the issues. More important, she trivializes the Holocaust.

First, the Holocaust is a part of history and, notwithstanding Ahmadinejad, can be verified as a fact. Similarly whether the present is warmer than the recent past is also verifiable, and no one, including so-called 'deniers' like Fred Singer or Richard Lindzen, denies that today is not warmer than, say, 150 years ago. What they dispute is the amount of warming, the extent to which humanity is responsible for that warming, and the portion of the human-induced warming that can be ascribed to well-mixed greenhouse gases such as carbon dioxide and methane and nitrous oxides as opposed to other anthropogenic factors -- all critical questions if one wants to design effective policies to slow climate change, which presumably Ms. Goodman would also want. Regarding the globally-warmed future, its consequences can be modeled but not verified, except after the fact. The best that can be done is to hazard an educated guess about its impacts. We do this using "models", so-called because they are not reality. And where does Ellen Goodman get the notion that global warming will parallel the Holocaust? Will the toll from global warming rival that of the Holocaust? Is that written in the just-published IPCC summary for policy makers, which only addresses the science, but not the socioeconomic impacts of climate change?

Finally, lest we forget, remember that the Holocaust was enabled in part by the passive acquiescence of a population too cowed by authority to dissent from the orthodoxies of time and place. Perhaps more dissenting voices might have saved more lives from the Holocaust.

More power to the dissenters -- 'deniers' to Ellen Goodman -- of today, who refuse to march lock step with -- and dare dissent from -- today's orthodoxies.