The Arctic was warmer in the 1930’s and 1940’s than it is now, and unlike now – glaciers were melting very quickly.
February 18. 1952
Dr. William S. Carlson, an Arctic expert, said last night that polar ice caps were melting at an astonishing and unexplained rate, and threatening to swamp seaports by raising ocean levels.
This information completely wrecks their climate scam, so NASA hides it by cooling the past in the Arctic.