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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 - Home https://bbc.in/2Sex5LW

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very funny

Why Guardiola's tactics stopped working amid rise of rapid football

BBC Sport analyses why Pep Guardiola's possession-focused tactics have stopped working amid the rise in rapid, direct football. from B...