Add Yahoo as a preferred source to see more of our stories on Google. A satellite image of Earth taken from above the arctic, with green swirls moving counterclockwise representing the movement of ...

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 ...

When the Magnetic North Heads South: Earth’s Reversals Regularly—at least in the geological sense—Earth’s magnetic field ...

A shift in the polar vortex could bring a blast of Arctic air to millions of Americans in the second half of March, forecasters have warned. The polar vortex usually keeps cold Arctic air confined ...

Earlier this month, a sudden atmospheric warming event caused the Arctic's polar vortex to reverse its trajectory. The swirling ring of cold air is now spinning in the wrong direction, which has ...