UN IPCC Expert Reviewer Dr. Vincent Gray: ‘There is no correlation whatsoever between carbon dioxide concentration and the temperature at the earth’s surface’
Gray: 'During the latter part of the Carboniferous, the Permian and the first half of the Triassic period, 250-320 million years ago, carbon dioxide concentration was half what it is today but the temperature was 10ºC higher than today . Oxygen in the atmosphere fluctuated from 15 to 35% during this period. From the Cretaceous to the Eocene 35 to 100 million years ago, a high temperature went with declining carbon dioxide. The theory that carbon dioxide concentration is related to the temperature of the earth’s surface is therefore wrong.'