8.7-magnitude earthquake off Sumatra

A scientist points to a seismograph that was recorded by an earthquake monitoring station in the French city of Strasbourg, on March 11, 2011. A magnitude 6.8 earthquake has struck off the coast of Chile, the US Geological Survey said, with no immediate tsunami warning issued

A scientist points to a seismograph that was recorded by an earthquake monitoring station in the French city of Strasbourg, on March 11, 2011. A magnitude 6.8 earthquake has struck off the coast of Chile, the US Geological Survey said, with no immediate tsunami warning issued