And yet, and yet, CO2 levels were far lower than they are today.
According to a new paper in the Journal of Geophysical Research, the observed mean thickness of the sea ice in the region north of (Arctic) Svalbard was substantially thinner (0.94 m) in 1955 than it has been in recent years (~1.6 m, 2015/2017).
Probably won’t see this in the lame stream media.
Graph Source: Rösel et al., 2018
Thanks to Don Brown for these links