The Polar Vortex Caused Mysterious Loud Booms Underneath the Ground of Chicago
Author: Kim Wong-Shing / Source: did you know? The “polar vortex” is more than just a name for extremely cold weather. The polar vortex is an actual whirling cone of low pressure, hanging out over the poles of the Earth. Its terrifying name is fitting, because when the polar vortex moves south,
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