Thousands of rescue workers combed through flattened villages in southwest China on Sunday in a race to find survivors from a powerful quake as the toll of dead and missing rose past 200.
Pakistani troops scrambled Wednesday to aid the remote victims of an earthquake centred in nearby Iran, as the United States offered assistance and a strong aftershock jolted the region.
The International Atomic Energy Agency on Monday started a fresh probe into Japan's Fukushima nuclear plant, where leaks and powercuts have dented public confidence in clean-up efforts.
A Japanese official mistakenly announced the launch of a North Korean missile instead of sending an alert about a strong earthquake that hit western Japan on Saturday morning.
Italy on Saturday commemorated the fourth anniversary of a devastating earthquake in and around the city of L'Aquila which killed 309 people and forced tens of thousands to abandon their homes.
A major 7.1-magnitude earthquake struck the eastern Indonesian province of Papua on Saturday, the US Geological Survey said, sending panicked crowds running into the streets.
A 4.7-magnitude earthquake Monday shook buildings in Los Angeles, with US seismologists saying it was the strongest to hit the area since 2010, but there were no reports of damage or casualties.