Realtime Quakes is a real time visualization of earthquakes that are happening anywhere in the world.
As source it uses a live stream from the USGS (United States Geological Survey).
The actual quakes (from the last hour) are marked on a Google Map.
As soon as a new quake has been detected, the map updates itself and centers around this most recent quake.
The markers are color coded: the redder the marker the bigger the magnitude of the quake.
You need to be patient: on average the earthquakes happen every 6-15 minutes.