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/2MH7R3z
Post Top Ad
Responsive Ads Here
Wednesday, January 30, 2019
Polar vortex: What is it and how does it happen?
Subscribe to:
Post Comments (Atom)
Post Bottom Ad
Responsive Ads Here
No comments:
Post a Comment