Thursday, January 31, 2019
The deep freeze gripping much of the US has been blamed on a polar vortex. Here's what that means.
from BBC News - World https://bbc.in/2Sex5LW
The deep freeze gripping much of the US has been blamed on a polar vortex. Here's what that means.
from BBC News - World https://bbc.in/2Sex5LW
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