The polar vortex is Earth's frozen guardian—but that guardian is starting to fail. This video dives into the science behind ...

The polar vortex is essentially a large area of low pressure and cold air surrounding both of Earth’s poles. It constantly sits over the poles but expands in the winter.

The polar vortex is coming—and raising the odds for intense winter weather. In the stratosphere over Siberia, temperatures recently jumped nearly 100 degrees Fahrenheit, shoving the polar vortex ...

The polar vortex is like a giant, swirling pool of super-cold air in the upper atmosphere over the North Pole. Imagine it like a children's spinning top.

Because Michigan is not a hot climate - and we don’t have frequent heat waves like we’re experiencing now - our bodies are ...