Assertion: vast glacier | /r/CapableOf | cover large swaths of the continents
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text: Over the past 20,000 or so years, the geoid should have been become rounder just as the planet has —the vast glaciers that once covered large swaths of the continents withdrew at the end of the last Ice Age, and since then the land that was once covered in ice has rebounded without the weight of ice pressing down on it, giving the Earth a more spherical shape.