LOS ANGELES, July 30 (Xinhua) -- A massive earthquake struck off the coast of Russia Tuesday, sparking tsunami alerts in the United States, including Alaska, Hawaii, Guam and the West Coast.

VLADIVOSTOK, July 30 (Xinhua) -- A 3- to 4-meter-high tsunami wave was observed in the Yelizovsky District of Russia's Far Eastern Kamchatka Peninsula on Wednesday, following a magnitude 8.7 ...