Terrified residents were jolted by a 6.7-magnitude aftershock that compounded one of the worst disasters to hit the impoverished Himalayan nation.
Some 200 homes were under evacuation orders in Riverside County.
A 7.5-magnitude earthquake struck off the coast of Papua New Guinea Monday, sending startled residents fleeing from their homes, but a tsunami threat passed with no immediate reports of major damage.
Earlier this month, "monster" cyclone Pam battered the islands of Vanuatu for almost 24 hours.
Up to 90 percent of houses in Port Vila were damaged from 200 mph wind.
It's not that earthquake faults in California are more dangerous than before. It's just that scientists are better now at measuring their potential for disaster.
A Tongan volcano has created a substantial new island since it began erupting last month.
Years of steady, quiet pressure on a plate boundary beneath the Pacific ocean resulted in the devastating 9.0-magnitude earthquake.
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