Whenever a winter is exceptionally cold, the term "polar vortex" gets thrown around, causing many to wonder if it was a new weather phenomenon. Actually, the polar vortex is always with us – just usually with a lower profile.
from HowStuffWorks - Learn How Everything Works! http://bit.ly/2B9j9Jg
Tuesday, January 29, 2019
Subscribe to:
Post Comments
(
Atom
)
No comments :
Post a Comment