As of 1975, there was nearly unanimous consensus among experts that the first half of the 20th century was exceptionally warm, and that temperatures had plummeted after 1940.
The National Academy of Sciences published this graph, showing that the late 1960’s were cooler than the turn of the 20th century.
From 1900 to 1950, there was dramatic retreat of ice in the Northern Hemisphere
POLAR ICE THAW INCREASING GLACIERS SAID TO BE MELTING
CLEVELAND, Feb. 16 (A.A.P.) Dr. William S. Carlson, an Arctic expert, said to-night that the Polar icecaps were melting at an astonishing and unexplained rate and were threatening to swamp seaports by raising the ocean levels.
The glaciers of Norway and Alaska are only half the size they were 50 years ago. The temperature around Spitsbergen has so modified that the sailing time has lengthened from three to eight months of the year,” he said. ‘
18 Feb 1952 – POLAR ICE THAW INCREASING GLACIERS SAID TO [?]…
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