The former chair of Greenpeace in a statement on 25 February before the US Senate Environment committee said there is no scientific proof that human emissions of carbon dioxide(CO2) are the dominant cause of the minor warming of the earth`s atmosphere over the past 100 years. No actual proof as it is understood in science, exists! Referring to the computer models of the IPCC(Intergovernmental Panel on climate Change) Dr Moore says that computer models are not a crystal ball. He goes on to say that we cannot predict the future with a computer model any more than we can make predictions with crystal balls.
When modern life evolved over 500 million years ago, CO2 was more than 10 times higher than today, yet life flourished at this time. An ice age occurred 450 million years ago when CO2 was 10 times higher than today. The earth today remains locked in what is essentially still the Pleistocene Ice Age, with an average global temperature of 14.5 celsius. This compares with a low of about 12 celsius during the periods of maximum glaciation to an average of 22 celsius during the warmer period prior to the most recent ice age. As recently as 5 million years ago the Canadian arctic islands were completely forested. Today we live in an unusually cold period in the life of the earth. There is ample reason to believe that a sharp cooling of the climate(predicted by many leading solar physicists---ed)) would bring disastrous results for human civilization.
The IPCC states that humans are the dominant cause of warming "since the mid 20th century". From 1910 to 1940 there was an increase in global average temperature of 0.5 celsius over that 30 year period. Then there was a 30 year pause until 1970. This was followed by an increase of 0.57 celsius during the 30 year period from 1970 to 2000. Since then there has been no increase ,perhaps a slight decrease, in average global temperature. This negates the validity of the computer models as CO2 emissions have continued to accelerate during this time(coming from equatorial areas of the earth as indicated by the Japanese IBUKU climate satellite data---ed). The increase in temperature 1910-1940 was virtually identical to the increase between 1970-2000. Yet the IPCC does not attribute the increase from 1910-1940 to "human influence" Why does the IPCC believe that a virtually identical increase in temperature after 1950 is caused mainly by "human influence" when it has no explanation for the nearly identical increase from 1910-1940? (see Dr Moore`s book "Confessions of a Greenpeace Dropout"