'In 1990, IPCC published graph based on NOAA data. It shows Arctic ice extent in 1974 was almost 2 million km^2 less than 1979. 1974 Arctic ice coverage was similar to current coverage,which is also about 2 million km^2 less than 1979...CIA published document in 1974,which tell us prior to 1974, Arctic ice coverage was an additional 10% lower. Deducting another 10% puts us back to about 2007 levels of ice. If IPCC, NOAA and CIA know about this, why is the information being obfuscated?'