Why the U.S. has been home to Earth’s most unusually cold air this year
The United States has been at the epicenter of the planet’s most unusually cold conditions early in 2025. The polar vortex is to blame.
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Why much of the U.S. has had Earth’s most unusually cold air this winter
The polar vortex has taken on an unexpected pattern this winter - one that’s made part of the United States the most ...