The Japan Earthquake, Tsunami and Nuclear Crisis
On March 11, a powerful, magnitude 9.0 quake hit northeastern Japan, triggering a tsunami with 10-meter-high waves that reached the U.S. west coast. Here's the science behind the disaster
How Does an Earthquake Trigger Tsunamis Thousands of Kilometers Away?
As Japan suffered the worst earthquake in the country's recorded history, tsunami waves fanned out across the Pacific Ocean at the speed of a jetliner
Nuclear Experts Explain Worst-Case Scenario at Fukushima Power Plant
The type of accident occurring now in Japan derives from a loss of off-site AC power and then a subsequent failure of emergency power on-site. Engineers there are racing to restore AC power to prevent a core meltdown...
Worldwide Monitoring Network Allows for Rapid Tsunami Warnings
After the Japan earthquake, seismic stations, deep-ocean buoys and tidal gauges delivered a wealth of data for accurate tsunami forecasts in Hawaii, California and the rest of the Pacific Rim, but public preparedness can be even more important...
MOX Battle: Mixed Oxide Nuclear Fuel Raises Safety Questions
One of the troubled Fukushima Daiichi reactors contains a blend of uranium and plutonium fuel that may soon find use in the U.S. Does it pose more risks than standard uranium fuel?
What You Need to Know about the Japan Nuclear Crisis [Updated]
Confused by the fast-changing pace of events? Here are the key points to know
Nuke Reboot: Physicists List Lessons to Be Learned from Japan's Nuclear Crisis
For starters, retrofits could make U.S. reactors safer--and maybe even make nuclear power more palatable
Safety Concerns Often Amount to Status Quo at U.S. Nuclear Industry's Aging Reactors
Leaks, burst cooling pipes, faulty controls, misplaced fuel rods and engineers' warnings about design flaws have done little to slow down approvals for continued operation of the nation's aging nuclear plants...
Could the Recent Pacific Megaquakes Trigger a West Coast Temblor?
A series of major earthquakes have struck beneath the Pacific Ocean in less than a year and a half. Could the U.S. west coast be next?
Fukushima Will Be a Wasteland
Scientific American's David Biello judges Fukushima to have reached Chernobyl proportions. Steve Mirsky reports
Day-to-Day Satellite Photos Reveal the Unfolding Crisis at the Nuclear Power Plant in Japan [Slide Show]
Aerial views of the damage at the Fukushima Daiichi power plant from March 12 to March 17 show signs of the chaotic sequence of events ranging from explosions to fires
How Much Spent Nuclear Fuel Does the Fukushima Daiichi Facility Hold?
As Japan attempts to cool overheating nuclear fuel with seawater, experts worry that the damaged spent-fuel pools pose the greatest threat
Radiation's Complications: Pinning Health Problems on a Nuclear Disaster Isn't So Easy
Radioactive fallout seems like the obvious culprit behind the negative medical consequences that arose after the explosion at Chernobyl, but it's hard to measure even the dosage those contaminated received, let alone link it to medical problems...
Should Japan's Reactor Crisis Kill the Nuclear Renaissance?
Any future discussion of nuclear power will have to take a hard look at regulation and safety, in particular the practice of storing spent nuclear fuel rods on-site
Fate of Nuclear Plant in Japan Hangs in the Balance as Melting Continues
Exposed fuel pools and low-pressure readings at the Fukushima Daiichi plant suggest growing hazard levels there, raising serious concerns about the course of the crisis
Fast Facts about Radiation from the Fukushima Daiichi Nuclear Reactors
Elevated radiation levels have been detected at and around the stricken nuclear power station in Japan, but the Chernobyl accident remains far more catastrophic
Is Seawater a Last Resort to Cooling Japan's Nuclear Reactors?
Japan's Fukushima Daiichi nuclear plant normally relied on purified water to whisk away heat from its reactors, until the destruction wrought by the March 11 tsunami called for extreme measures...
Fast Facts about the Japan Earthquake and Tsunami
The speed of the Pacific Plate, the distance Japan's main island was displaced, and other facts and figures about the March 11 earthquake help to put this event into perspective
Does Potassium Iodide Protect People from Radiation Leaks?
Drugmakers are claiming to be running out of the thyroid cancer preventative, but depending on age and other circumstances, its usefulness is limited
How Radiation Threatens Health
As worries grow over radiation leaks at Fukushima, is it possible to gauge the immediate and lasting health effects of radiation exposure? Here's the science behind radiation sickness and other threats facing Japan...
What Happens During a Nuclear Meltdown?
Nuclear reactors at the Fukushima Daiichi station in Japan are critically endangered but have not reached full meltdown status. Our nuclear primer explains what that means and how the situation compares with past nuclear accidents...
Health Risk Fears Escalate as Japan Nuclear Plant's Radioactive Release Remains Uncertain
Even as increased levels of radiation are likely to be picked up in the U.S., experts suggest little health risk to those outside the immediate area near the damaged Fukushima nuclear facility...
Workers Battle Fukushima Nuclear Crisis at Personal Risk
Threats of explosions and dangerously high radiation doses are just some of the risks facing workers trying to avert complete meltdowns at multiple reactors in Japan
Partial Meltdowns Led to Hydrogen Explosions at Fukushima Nuclear Power Plant
Hydrogen and steam explosions pose ongoing risks at the stricken Fukushima nuclear power plant, where three such events have already occurred in the past five days
A Visual Tour of the Massive Earthquake and Tsunami That Hit Japan [Slide Show]
Maps and on-the-ground views reveal the aftermath and its extent
Taking Waves: Nation's First Tsunami-Resistant Building Could Be Built on the Oregon Coast
The design, which features reinforcements at the base of a large stilted building to help prevent damage from powerful tsunamis, aims to provide a new city hall and vertical-escape shelter for 1,500 people...
25 Years After: Scenes from Chernobyl--The Worst Nuclear Accident in History [Slide Show]
On the eve of the 25th anniversary of the nuclear disaster at the Chernobyl power plant in Ukraine, Scientific American frequent contributor Charles Q. Choi traveled to the site and snapped these haunting images...
How Far from Fukushima Will Fallout Pose a Health Risk?
Amid conflicting evacuation recommendations, radiation experts say that exposures to date have been relatively low outside the power plant and that people in the U.S. will not face any danger...
Nuclear Cover Up: World's Largest Movable Structure to Seal the Wrecked Chernobyl Reactor
To safely enclose and robotically dismantle the 25-year-old makeshift confinement sarcophagus at Chernobyl, contractors are now erecting a massive steel structure weighing more than 29,000 metric tons...
Will Fukushima Disaster Spell the End for a U.S. Nuclear Revival?
The full impact of the nuclear emergency in Japan will depend on how bad it gets
How to Cool a Nuclear Reactor
Japan's devastating earthquake caused cooling problems at one of the nation's nuclear reactors, and authorities scrambled to prevent a meltdown
Nuclear Accident Is Long-Feared "Station Blackout"
At a press briefing, physicist Ken Bergeron explained the type of accident occurring at Fukushima. Steve Mirsky reports
A Guide to Earthquakes
What causes tremors? What makes them stop? Can they be predicted? Are our buildings as safe as they can be?
Seconds Before the Big One: Progress in Earthquake Alarms
Earthquake detection systems can sound the alarm in the moments before a big tremor strikes—time enough to save lives
Deja vu: What does the Gulf oil spill tell us about the Japanese nuclear crisis?
For the second time in under a year, a large-scale energy disaster is unfolding before our eyes. Two different industries. Two different crises. Can we apply any lessons from the Gulf oil spill, and what can we expect for the nuclear industry moving forward?...
Fukushima Crisis Worsens as U.S. Warns of a Large Radiation Release
A top U.S. nuclear regulator has now given a dire assessment of Japan's nuclear crisis, saying that radiation from uncovered spent fuel at the Fukushima Daiichi plant could force emergency workers to abandon their fight to prevent meltdowns there...
Japan's Giant Shock Rattles Ideas about Earthquake Behavior
Few experts thought the seismic zone off Sendai, Japan, was capable of such violence.
