24 May 2011, 12:37 PM ET
Japan's massive quake was a two-part rupture, researchers say.
18 May 2011, 03:14 PM ET
The atmosphere changed suddenly above the epicenter in the days before Japan's March 11 earthquake.
11 May 2011, 04:08 PM ET
The relatively low magnitude quakes caused significant damage.
11 May 2011, 02:30 PM ET
Thousands of Romans are fleeing Rome in fear of a massive earthquake that may or may not have been predicted by Raffaele Bendandi. A neuroscientist explains why.
10 May 2011, 02:35 PM ET
Quake could mix worst of 2010 Chile and Haiti earthquakes.
09 May 2011, 06:45 PM ET
A long-dead pseudoscientist named Raffaele Bendandi may or may not have predicted a massive earthquake in Rome on May 11. One USGS seismologist says it won't happen.
27 April 2011, 03:03 PM ET
Tornadoes more associated with region, but quakes have shaken here before.
20 April 2011, 02:07 PM ET
A number of devastating earthquakes, including the massive Japan quake, have struck across the globe in recent years, sparking fears that our planet is in an age of megaquakes and could expect more in the near future.
08 April 2011, 09:21 AM ET
The recent spate of large temblors may not signal more to come, but we're more vulnerable to them.
07 April 2011, 04:19 PM ET
Did a psychic really predict the aftershock that struck Japan today? Life's Little Mysteries explains why not.
25 March 2011, 10:52 AM ET
Mental first aid during a disaster can ease long-term psychological suffering.
22 March 2011, 03:07 PM ET
Long-planned tsunami drill falls just after Japan tragedy.
21 March 2011, 06:16 PM ET
Earthquakes do come in clusters, but that doesn't mean an earthquake will hit California soon, as some members of the press have claimed.
18 March 2011, 03:10 PM ET
These relatively low magnitude quakes produce freakishly large waves.
17 March 2011, 01:32 PM ET
A day-by-day account of the events at the Fukushima nuclear power plants in Japan damaged by the March 11 earthquake and tsunami.
17 March 2011, 09:00 AM ET
In the aftermath of the Japan earthquake and tsunami, elders are at risk for unique psychological troubles.
16 March 2011, 03:59 PM ET
As radiation levels at Japan's Fukushima nuclear power plant spiral out of control, workers put their lives on the line to try to prevent a catastrophic meltdown.
16 March 2011, 03:14 PM ET
An earthquake on par with the recent seismic event in Japan is possible in two places in the United States.
16 March 2011, 01:18 PM ET
This photo montage depicts the dramatic change in Japan's landscape following the devastating earthquake & tsunami.
16 March 2011, 01:00 PM ET
The map uses earthquake records stretching back to 2150 BC.
15 March 2011, 04:48 PM ET
President Dwight Eisenhower articulated a vision of international cooperation. The International Atomic Energy Administration drives that dream.
14 March 2011, 01:37 PM ET
A partial meltdown has occurred at three nuclear reactors in the Fukushima power plant in Japan, due to a failure of the cooling system.
14 March 2011, 01:05 PM ET
A partial meltdown has occurred at three nuclear reactors in the Fukushima power plant in Japan. Here's how.
11 March 2011, 06:29 PM ET
Earthquakes may seem to come in clusters, but that's probably just a statistical quirk, researchers say.
11 March 2011, 05:15 PM ET
The cooling systems at two nuclear plants in Japan have malfunctioned as a result of a 8.9-magnitude earthquake. A buildup of nuclear decay heat has caused a small radiation leak at one reactor site.
11 March 2011, 05:02 PM ET
Images from Japan, Chile, Haiti, Sri Lanka and other places affected by earthquakes since 2000.
11 March 2011, 04:17 PM ET
Here's a look at the science basics of Japan's earthquake and tsunamis.
11 March 2011, 04:05 PM ET
Data will help researchers understand the quake and its effects.
11 March 2011, 03:46 PM ET
Get the basics on the Japanese earthquake and tsunami.
11 March 2011, 03:03 PM ET
Current systems are good, but are they fast enough?
11 March 2011, 02:13 PM ET
An earthquake has struck Japan surprisingly near the date of the March 19 supermoon, but this is just a coincidence.
11 March 2011, 12:18 PM ET
Whirlpools aren't uncommon during post-tsunami chaos, eyewitness accounts suggest.
11 March 2011, 11:31 AM ET
The cooling systems at two nuclear reactors in Japan have malfunctioned as a result of a 8.9-magnitude earthquake. If they remain down, a buildup of nuclear decay heat could cause radiation leaks.
11 March 2011, 11:15 AM ET
A devastating 8.9-magnitude earthquake rocked the east coast of Honshu, Japan, early Friday morning, triggering a 30-foot-high tsunami that has caused the U.S. National Weather Service to issue a warning for at least 50 countries.
11 March 2011, 11:13 AM ET
The massive quake set the ocean water above it into motion.
11 March 2011, 10:16 AM ET
This animation shows the travel times and energy levels of the tsunami created by the earthquake in Japan.