This crisis has revealed yet again the faultline at the heart of the euro.

BBC: The struggle for Cyprus

Whether you agree with Kristol or not, he has defined a new faultline within Republican ranks.

FORBES: Whither the Republicans

This Lib Dem faultline will be hard to fix, but there was no earthquake at the conference.

ECONOMIST: The ghosts at Ashdown’s feast | The

But what about the wider problem of the perceived weakness of the eurozone's banks, which is the faultline running through the global economy right now?

BBC: If RBS needs capital, taxpayers will suffer

Raffaele Azzaro, first researcher at INGV-CT, told CNN that one local faultline has moved by as much as 17 centimeters in one day, and currently moves at a rate of around three centimeters each year.

CNN: Keeping track of Etna's pulse