There are more ways than we knew for the stratospheric polar vortex to get disrupted, shooting cold air southwards across North America.

There are more ways than we knew for the stratospheric polar vortex to get disrupted, shooting cold air southwards across North America.
East Africa may look very different in five to ten million years.
The answer, as usual, is somewhere in the middle.
That would be the dream.
The answer is right under your nose. Obviously.