Paul EhrlichEhrlich has stated that despite his other work, the predictions of his first book are regularly cited as proof of extensive flaws in the environmental movement. At the same time, Ehrlich also notes that many things critics claim were "predictions" were actually scenarios. In the first edition of The Population Bomb, Ehrlich wrote: "The possibilities are infinite; the single course of events that will be realized is unguessable. We can, however, look at a few possibilities as an aid to our thinking, using a device known as a 'scenario'.
Scenarios are hypothetical sequences of events used as an aid in thinking about the future, especially in identifying possible decision points...Remember, these are just possibilities, not predictions." (p. 72)
http://en.wikipedia.org/wiki/Paul_R._Ehrlich#The_Population_BombAl GoreConcern peaked in the early 1970s, partly because of the cooling trend then apparent (a cooling period began in 1945, and two decades of a cooling trend suggested a trough had been reached after several decades of warming), and partly because much less was then known about world climate and causes of ice ages. Although there was a cooling trend then, it should be realised that climate scientists were perfectly well aware that predictions based on this trend was not possible - because the trend was poorly studied and not understood. However in the popular press the possibility of cooling was reported generally without the caveats present in the scientific reports.
The term "global cooling" did not become attached to concerns about an impending glacial period until after the term "global warming" was popularized. In the 1970s the compilation of records to produce hemispheric, or global, temperature records had just begun.
A history of the discovery of global warming states that:
While neither scientists nor the public could be sure in the 1970s whether the world was warming or cooling, people were increasingly inclined to believe that global climate was on the move, and in no small way.http://en.wikipedia.org/wiki/Global_coolingRuy de GoesIn the widely viewed 1985 TV documentary Amazonia, produced by the World Wildlife Fund, the narrator intones that “in the brief amount of time it takes to watch this film, roughly 400,000 acres of forest will have been cleared.” Ruy de Goes of Greenpeace-Brazil says that in the last four years “an area the size of France was destroyed.”
A National Geographic documentary claims that, worldwide, “rain forest is being cleared at a rate of 20 football fields a minute.” Rainforest Action Network says the Amazon is being deforested at a rate of eight football fields a minute. Tim Keating of Rainforest Relief says that worldwide deforestation can be measured in seconds. “It may be closer to 2 - 3 football fields a second,” says Keating.
When de Goes of Greenpeace-Brazil is confronted with the disparity in numbers regarding these football fields, he replies, “ The numbers are not important; what is important is that there is huge destruction going on.” However, Moore says that the only way such huge numbers are generated is by using double accounting. “You would have cleared 50 times the size of the Amazon already if accurate.”
Luis Almir, an official with the state of Amazonas in Brazil, calculated using five football fields a minute and sarcastically concludes that, if the numbers were correct, “we would have a desert bigger than the Sahara.”
http://www.aljoma.com/enviromental03.htmSo de Goes was incorrect, but the others were distorted by the dickheads. I'll think about these "alarmists" the next time our great leader sets off another alert.