Two significant earthquakes struck Alaska within four days, according to the National Center for Seismology. A 7.3 magnitude quake hit on 17 July, followed by a 6.2 magnitude tremor on 21 July, both ...

A magnitude 7.3 earthquake struck Tuesday just off the coast of Vanuatu in the South Pacific Ocean, the USGS said.. An earlier tsunami warning for the island nation was called off less than two ...