 News reports have suggested that the claim was picked up by the IPCC when it was quoted in a 2005 report by the World Wildlife Fund, which may itself have drawn on a 1999 article in the popular science magazine New Scientist.
<coherence>  News reports have suggested that the claim was picked up by the IPCC when it was quoted in a 2005 report by the World Wildlife Fund, which may itself have drawn on a 1999 article in the popular science magazine New Scientist.