11.   Cracks were discovered in the tunnel archway in early February.

12.   Scientists have discovered a crack along one side of the crater of the Mount Etna volcano, which spewed smoke and lava for a second consecutive day Friday.

13.   The automaker stopped using the tire last month when the cracks were discovered by workers at its Indiana plant.

14.   The Pacific Coast Highway was shut down in Malibu after a widening crack was discovered in an aging bridge over the swollen Malibu Creek.