It began as a low rumble, I thought it was a train or large machine on the road at first, but when the whole house began to shake I realised it could only be an earthquake or perhaps a large plane crash.

BBC: Cumbria quake: Your comments

This is what New York's Metropolitan Transportation Authority found after it began installing digital clocks to display the number of minutes before the next subway train would arrive on the platform.

WSJ: The Wait-Time Misery Index