Thanks to Gristmill for pointing to this amazing advertisment from a 1962 issue of Life Magazine. Humble Oil later merged with Standard to become Exxon.
And it's all true!
Reporting in the journal Nature in September, researchers from British Antarctic Survey and the University of Bristol describe how analysis of millions of NASA satellite measurements from both vast, polar ice sheets shows that the most profound ice loss is a result of glaciers speeding up where they flow into the sea.
The authors conclude that this ‘dynamic thinning’ of glaciers now reaches all latitudes in Greenland, has intensified on key Antarctic coastlines, is penetrating far into the ice sheets’ interior and is spreading as ice shelves thin by ocean-driven melt. Ice shelf collapse has triggered particularly strong thinning that has endured for decades.For an overview of the Arctic, check out the Arctic Report Card, released earlier this month.