So far in 2026, the winter weather in the US has been a lot more extreme than expected. Everyone is quick to blame climate change, but according to experts, there is something more specific at play.
The polar vortex, which is a band of strong winds that encloses a pool of freezing cold air in the Arctic, can cause extreme wintry weather in the US when it becomes unstable.
Curious? Check out this gallery to find out more.