Posted 24 June 2013

The greatest difficulty facing the promoters of the theory that human emissions of carbon dioxide (CO2) cause dangerous global warming is the inconvenient truth that it is impossible to measure the average temperature of the earth’s surface by any known technology. Without this information it is not possible to claim global warming. In his latest NZClimateTruth (No.313), Dr Vincent Gray cites work by Dr Roy Spencer, of University of Alabama, Huntsviile, USA, and Dr Murray Salby, of Macquarie University, Australia, showing how claims about CO2 have been fabricated.

Download pdf file[ here ](nzct. no 313.pdf)

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