As Canadians, we are very familiar with the term ‘polar vortex.’ We are also familiar with its effects on Canadian weather when it ‘acts up.’ While the polar vortex is a year-round phenomenon, we tend ...

Add Yahoo as a preferred source to see more of our stories on Google. Atmospheric scientists were surprised earlier this month to notice that the Arctic's polar vortex reversed its trajectory as it ...

The polar vortex at the North Pole made a sudden U-turn March 4. The jet stream, which normally travels from west to east in the Arctic, reversed for 21 days. This rare event is known as sudden ...

Have you ever wondered how something as simple as air can turn into something as powerful as a tornado? In this segment of Up ...