Thursday, January 31, 2019

Polar vortex: What is it and how does it happen?

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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Fossil proves hyenas once roamed Canada's Arctic Plains

A 50-year-old mystery has been solved by scientists who identified the teeth of ancient Arctic hyenas. from BBC News - World https://bbc.i...