It's polar shifts. The "world" that we know is going to end, and a
new one is going to begin. But, the world is not going to end-end.
The Earth's rotation is going to change, and our North and South Poles
will be in different places. This will cause climate changes to occur.
The worry is that if the polar shift occurs too quickly.
This is based on the beliefs of some South-western U.S. Native peoples,
according to a documentary that I once watched. They believe that the
world began four times, and has ended three times. Once the polar shifts
occur, then metaphorically the world has ended, and a new one has began.
A new world with a new North and South Pole. It is expected to happen
three years from now, or at least not far from it.
The world won't literally end for another 3 billion years, unless the Sun should burn out.