The headline makes it seem like the Earth actually flips over (which is impossible for a spinning ball of liquid as far as I can reason about it). The article is about the magnetic poles.
This wiki page could be worded a little more clearly though, it sounds like the axis could have shifted by ~25°? Or Asia could have migrated due to the shift of the axis ~174 million years ago? 25° change in axis would be quite dramatic.
The Earth is essentially a spinning ball of liquid that flows around and with a crust floating on top that we can walk around on. Pretty much the only ‘orientation’ it can have is the axis that it spins around.
I'm no climate scientists, but I'd think "tipping over the earth on its side" would mess up the weather more than just a bit. The title and the intro suggests that the planet will flip "90 degrees", the rest of the article does nothing to explain this intro.