Fires break out across San Francisco after the April 18, 1906 earthquake.
According to current forecasts, California has a 93 percent chance of an earthquake with magnitude 7 or greater occurring by 2045. Early warning systems, now in development, could limit casualties and damage.
A Westpac Little Ripper drone helped rescue two teens off the coast of Australia by dropping a flotation device to them.
Westpac Little Ripper
Drones and unmanned aerial vehicles are already saving lives in search and rescue operations, but they still need improvements if they're to be widely used in the most dangerous situations.
Searching for victims after a rain-triggered mudslide that blanketed a village and killed at least 178 people in north China’s Shanxi province, Sept. 13, 2008.
AP Photo/Andy Wong
While the Montecito, California mudslides took 20 lives, landslides kill far more people in developing countries. Tighter construction standards and early warning systems could help reduce their toll.
Drones being used to find survivors after an earthquake in Ecuador in 2016.
Stand by for drones, robots and sensors to the rescue.
Many of the Iranian dead in the Nov. 12 Iran earthquake lived in the Mehr Housing, state-built affordable apartments that crumbled when other buildings stayed up.
AP Photo/Vahid Salemi
On Nov. 12, a 7.3 magnitude quake killed some 500 and injured 7,000 along the Iran-Iraq border. This Kurdish area has also been crushed by war and, after a recent separatist vote, militarily attacked.
Where there’s smoke, there will be lava?
U.S. Geological Survey via AP
How do scientists predict volcanic eruptions? To do so with accuracy, they need to know the individual volcano and its history very well.
More than 600,000 buildings were fully damaged in the 2015 earthquake in Nepal.
Jason von Meding
Reconstruction progress in Nepal has been painfully slow. Building code compliance and better urban planning are a must – but inequitable access to resources undermines recovery.
Earthquake survivors are living in tents in western Iran.
AP Photo/Vahid Salemi
The Nov. 12 earthquake wasn't centered on any known major faults in the Earth's crust. In its wake, scientists will collect data to add detail to what they know about seismic activity in the area.
A detection station for seismic activity at Bilibion, a remote corner of Russia.
The Official CTBTO Photostream (Copyright CTBTO Preparatory Commission)
Human-induced earthquakes have been reported from every continent except Antarctica. We asked a geologist to investigate whether North Korea's nuclear tests could trigger geological changes.
A wastewater injection well in Coyle, Oklahoma. Increases in wastewater injection at the underground can destabilise pre-existing faults, setting off earthquakes.
J. Berry Harrison III / News 9 Oklahoma
As global demand for energy and mineral supplies increases worldwide, the number of man‑made earthquakes is expected to rise. That increases the importance of understanding connection between the two.
Many of Greater Mexico City's 22m residents aren't receiving the help they need.
The Military Sealift Command hospital ship USNS Comfort traveled to Puerto Rico after Hurricane Maria.
Ernest R. Scott/U.S. Air Force/Handout via Reuters
The military can make a big difference right away but humanitarian deployments should generally be rare and brief.
Workers clear debris on Sept. 25, 2017 from the top of a building that collapsed in Mexico City after the Sept. 19 earthquake.
AP Photo/Rebecca Blackwell
Natural disasters are not only bad in the short term. Many families will see their health, well-being and ability to escape poverty affected for decades, and some will be affected for life.
The interests of future holiday-makers are far from important in times of crisis, but tourism is economically key to these countries.
Rescue workers arrive to Juchitán, Oaxaca, which was almost completely destroyed in Mexico’s September 7-8 earthquake.
Shattered by powerful back-to-back earthquakes, Mexico is facing daunting damages across six states. Now Chiapas and Oaxaca, the country's two poorest states, which were hit first, fear neglect.
The city of Juchitan, on Mexico’s southern Pacific coast, was hit particularly hard by the 8.2-magnitude earthquake that shook the region on Sept. 7, 2017.
The Tehuantepec gap in southeastern Mexico, where this month's massive earthquake originated, was long thought to be 'aseismic.' On September 7, scientists learned otherwise.
Residents look at the damaged hotel ‘Ane Centro’ after a 8.1 magnitude earthquake in Matias Romero, Oaxaca, Mexico.
A 8.1 magnitude earthquake hit off the coast of Mexico on 8 September 2017. Fortunately, initial fears of a damaging tsunami hitting the coastline now appear unfounded.
South Korea’s Meteorological Administration, on the case.
Within hours of North Korea's latest underground nuclear test, Japan and South Korea were both able to independently confirm it had happened. How?
Sometimes 'stuff' isn't just stuff.
Now abandoned, part of Sidoarjo town is entombed in mud metres thick.
The world's largest mud volcano has consumed several villages, but we're no closer to the answer of how and why it began.