I read this Crichton speech. While I see his point, I have to severely disagree with his interpretation of what are carefully selected snapshots of environmental and other views. He even answers his own objections to the Y2K situation. Like many problems of this type, dire warnings, often couched in overdramatised language, ARE NECESSARY to get people  moving. The fact that Y2K caused minimal disruption is because of the warnings and the consequential efforts to rewrite and adapt programmes and computers. Like many "deniers" he seems to be using a post facto analysis to say that because nothing much happened, the original warnings were baseless scare mongering. This type of thinking is highly dangerous because such people often go on to apply such hindsight to current "dire warnings" and draw the conclusion that they will prove to be just as inconsequential, therefore no effort should be made to address the problem because  past experience shows that these problems solve themselves or are not problems at all in the first place. Madness - utter illogical madness!
    Crichton mentions the 70's fears of global cooling and human created ice age but tricks us into thinking that we are reading an excerpt from current climate fears. The fears then were that particles, smoke and soot/acid from combustion would block off sunlight at high altitude and cause an accelerating cooling of Earth leading to a new ice age. I shared those fears at that time. The theory of greenhouse gas warming had yet to appear or was not widespread. This gibe had been slung at environmentalists before along the lines of " now in the 90's you are warning about global warming - in the 70's you were scare mongering about global cooling - make up your minds!" The truth is that then, as now, environmentalists were quoting the best scientific knowledge of the time and informing the general public, who had a right to know - not just the "elite" of scientists and policy makers. Ironically, the very soot/acid particles etc that we were warning about then have been proved to genuinely have a cooling effect that has mitigated the effects of increasing levels of greenhouse gases and thus have masked the underlying global warming. We weren't wrong, we were terribly right - people have the power to royally screw up their planetary environment if they don't listen to warnings, take heed and take action to avoid the imminent threats and precautionary action to avoid the long term threats...
 
Nick Palmer

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