In 2011, Soledad O'Brien examined how clean up efforts were going a year after the Deepwater Horizon oil rig explosion.
A federal judge in Louisiana on Thursday rescheduled the liability trial in the BP oil spill in Gulf of Mexico and postponed it to early next year from later this year.
In 2008 Condolezza Rice visited Japan amid furor over the arrest of a US Marine on rape charges.
Affirming strong ties in a time of challenges, President Barack Obama and visiting Japanese Prime Minister Yoshihiko Noda on Monday hailed an agreement to move U.S. Marines from Okinawa and expressed solidarity against North Korea's nuclear weapons program.
First came the stuff that floats on the surface and is pushed by wind: Buoys, a soccer ball, flotation devices. And, most notably, a rust-stained unmanned fishing trawler in Alaskan waters.
The sinking of a fishing trawler in Alaskan waters ends its voyage a year after a tsunami swept it off the Japan coast.
Twenty-six years after Chernobyl, one organization works with people who are still living with after effects.
Twenty-six years ago this week, a botched reactor safety test in a corner of what was then the Soviet Union set off the worst nuclear accident in history.
A look back at the first 100 days of the Deepwater Horizon oil disaster of 2010 and BP's efforts to contain the spill.
A former BP engineer has been charged with destroying 200-plus text messages about the Deepwater Horizon oil spill, including one concluding that the undersea gusher was far worse than reported at the time.
First images from GEO TV of the plane crash site and debris near Rawalpindi, Pakistan.
A commercial airplane carrying 127 people crashed Friday in Islamabad just before it was to land at a nearby airport, according to Pakistan's Civil Aviation Authority, which cited poor weather as a possible factor.
As we prepare to celebrate Earth Day on Sunday, let us not forget that Friday marks the second anniversary of the start of the BP oil spill. It deserves more than a shrug, an "oh, yeah," and "how's the fishing?" It deserves more than a solemn voiced announcer relegating it to a "this day in history," with a picture from the archives to jog our memory.
The oil disaster in the Gulf struck a chord with former Black Crowes bassist and iReporter Johnny Colt.
Anyone who uses a smartphone, puts away money in a 401(k), or wants to keep their grocery bill from skyrocketing needs to be aware of a new dynamic in the world economy.
BP confirms oil has stopped flowing into the Gulf of Mexico for the first time in months as part of a well test.
BP announced Wednesday it has reached a class-action settlement with attorneys representing thousands of businesses and individuals who made claims after the 2010 oil spill in the Gulf of Mexico.
Scientists recorded continuing volcanic activity Tuesday in Mexico's Popocatepetl volcano, which sits just southeast of Mexico City and its more than 19 million residents.
A strong earthquake struck coastal Chile near the port city of Valparaiso late Monday, causing mudslides and some minor damage, the U.S. Geological Survey reported.
A strong earthquake strikes Chile, causing minor damage. CNN's Jose Manuel reports.
Threats of another perilous outbreak of tornadoes appeared to fizzle Sunday, a day after powerful storms tied to the same weather system tore through the Midwest and Plains states.
Wichita was under a tornado emergency late Saturday as a large twister, part of a series of severe storms in the Great Plains, moved through south-central Kansas and threatened to destroy homes.
The undersea earthquake off the Indonesian island of Sumatra on Wednesday was the largest earthquake of its type ever recorded and has increased the risk of more powerful quakes in the region, a leading expert has said.
Phillip Charlesworth of IFRC Indonesia Country Office discusses search and rescue efforts following the massive quake.
An earthquake with a preliminary magnitude of 7.0 struck near Mexico's western coast on Wednesday, the U.S. Geological Survey said.
A massive earthquake struck off the coast of the Indonesian island of Sumatra on Wednesday afternoon, triggering a tsunami watch for the Indian Ocean, which was later canceled.
Water recedes slightly from a beach in Phuket, Thailand, after a earthquake off Indonesia triggered a tsunami alert.
Indonesia's response to a massive earthquake and a tsunami scare Wednesday highlights a critical reality: Warning systems and emergency responses have come a long way since the catastrophe of eight years ago.
A large Southern California nuclear plant is out of commission indefinitely, and will remain so until there is an understanding of what caused problems at two of its generators and an effective plan to address the issues, the nation's top nuclear regulator said Friday.
Truck trailers are thrown around violently as a tornado rips through North Texas.
Nearly 1,100 homes were hit by the tornadoes that struck the Dallas-Fort Worth area Tuesday, including 349 homes that were destroyed, a Red Cross spokeswoman said Thursday.
Folks in hurricane-prone areas of the United States and Caribbean may breathe a sigh of relief this year. Forecasters at Colorado State University say a less-active hurricane season is in store.
Perhaps one of these will get your attention:
A tornado sweeps through a tractor-trailer complex in Texas leaving a pile of debris.
A powerful earthquake with a preliminary magnitude of 6.3 struck southern Mexico on Monday, the U.S. Geological Survey said.
A twin-engine plane carrying 43 people crashed soon after takeoff in Siberia, killing all but 12 people.
Energy giant Total has found the source of a gas leak on an offshore oil platform in the North Sea, the company told CNN on Thursday. The leak is on the deck level of the well head platform, Total said.
Japan's largest utility asked the government for 1 trillion yen ($12 billion) in fresh capital Thursday to stay solvent as it faces enormous compensation costs for the Fukushima Daiichi nuclear disaster.
A 6.0-magnitude earthquake shook eastern Japan Tuesday, the U.S. Geological Survey said, but no tsunami threat is expected.
It may not be on the official agenda, but North Korea's ears will be burning during the upcoming Nuclear Security Summit in Seoul.
South Korea prepares for a high-profile summit on nuclear issues, attended by President Obama and others.
Officials in Clintonville, Wisconsin, received calls from residents hearing loud explosion sounds. WLUK reports.
The mystery behind four days of unexplained shaking and odd sounds rattling Clintonville, Wisconsin, has been solved.
Mexican officials were assessing damage Wednesday, a day after a strong earthquake left homes in ruins and rattled residents hundreds of miles away from the epicenter.
CNN's Brian Todd reports on earthquake damage captured on video in Mexico.
An author tracks the lives of the Fukushima nuclear workers. CNN's Kyung Lah reports.
When Pieter Franken visited Hong Kong one of the first things he did was measure the level of radiation in his hotel room.
The massive earthquake and tsunami in Japan one year ago understandably raised questions about the safety of America's nuclear energy facilities. Americans should know that all U.S. nuclear energy plant safety systems have been verified by the companies operating them as well as deemed safe by the independent Nuclear Regulatory Commission.
A 6.8 magnitude earthquake shook northeastern Japan on Wednesday, according to the U.S. Geological Survey.
A 6.8-magnitude earthquake shook northeastern Japan on Wednesday, according to the U.S. Geological Survey.
A line of severe thunderstorms produced heavy rain and flooding in and around Lafayette, Louisiana.
Record floodwaters inundated parts of southern Louisiana early Tuesday after intense rains caused flash flooding and prompted hundreds of rescues.
CNN's Kyung Lah visits a roadside shrine to honor those lost in last year's quake and tsunami.
Since last year's Tohoku earthquake, the scenes of devastation and Daiichi nuclear disaster immediately come to mind when people hear "Fukushima."
Scores of Japanese citizens filed a lawsuit Monday in an effort to block the restarting of a nuclear power facility as tensions remain over atomic energy in the country a year after the Fukushima Daichi disaster.
It's been a year since one of the worst natural disasters ever devastated the northeast coast of Japan.
Japan gathered Sunday amid tears, prayers and a moment of silence to mark one year since an earthquake and tsunami killed thousands, and triggered the world's worst nuclear crisis in a quarter century.
Japan marks one year since the devastating earthquake and tsunami. CNN's John Vause and Kyung Lah report.
From uncertainty to courage, distrust to control, and despair to hope.
One year ago, a series of events began with an earthquake off the cost of Japan that culminated in the largest accidental release of radioactivity into the ocean in history.
One year after a devastating earthquake and tsunami struck northeast Japan, killing nearly 16,000 people and sparking the world's worst nuclear crisis in 25 years, the country will pause Sunday to remember the exact moment the earth shook.
In the wake of the Fukushima nuclear disaster a year ago, the attitude toward food safety has become a matter of personal preference for many Tokyo residents.
In the empty towns surrounding the ravaged Fukushima Daiichi power plant, piles of radioactive dirt serve as monuments to the difficulty of cleaning up the worst nuclear accident since Chernobyl.
One year later, risky working conditions still plague the recovery effort at the site of Japan's nuclear disaster.
The Nuclear Regulatory Commission on Friday ordered U.S. nuclear power plants to begin implementing safety recommendations made in an effort to prevent a crisis from occurring as it did in Japan after last year's devastating earthquake and tsunami.
Editor's note: Kathleen Koch is author of the best-selling book, "Rising from Katrina," which explores how citizens recover from disasters. She was a CNN correspondent for 18 years.
A look at the day of destruction caused by an earthquake and tsunami off the Japanese coast.
One year ago, the world watched as a massive tsunami engulfed entire communities in northern Japan.
A year after Japan's devastating earthquake and tsunami, CNN's Anna Coren reports on Sendai's reconstruction boom.
Convertibles are selling well at the Mercedes Benz dealership in Sendai in North Japan.
March 11 marks the one-year anniversary of the largest Japanese catastrophe since World War II. The unforgettable triple disaster was triggered by the 9.0-magnitude Great East Japan earthquake, resulting in a devastating tsunami and subsequent nuclear meltdown at the Fukushima Daiichi power plant, the effects of which are still being felt today.
Response to last year's tsunami among Japanese youth has led to a social shift that bucks the country's traditional ways.
One year later, tsunami survivors in Rikuzentaktata, Japan fight to rebuild their town. CNN's Kyung Lah reports.
Futoshi Toba's wife was killed by last year's tsunami but as a father of two and mayor of Rikuzentakata in Japan's Iwate Prefecture he has little time to grieve.
CNN's Rob Marciano reports from West Liberty, Kentucky, where tornado rubble is now covered with snow.
One tornado stayed on the ground for 95 miles as it tore through towns in Kentucky and West Virginia. Two other twisters left behind 49-mile paths of destruction.
When the Japanese business community talks about the incredible bounce back of Japan's supply chain, the name Renesas Electronics is usually on the tip of their tongues.
CNN's Kyung Lah reports on the effort it took to rebuild factories in Japan that supply industries around the world.
Cleanup workers make plodding progress Monday in parts of Kentucky and Indiana where fresh snow complicated efforts to dig out of the destruction wrought by last week's deadly tornadoes.
Kevin Welz from Henryville, Indiana, talks to Don Lemon about what it's like to see a tornado up close.
With dozens dead and scores of buildings reduced to rubble, residents of the Midwest and South on Sunday were assessing the damage that a series of vicious twisters left behind last week.
The Japanese prime minister issued a sobering and reflective assessment of his country's recovery as it prepares to mark the one year anniversary of a 9.0-magnitude earthquake, tsunami and nuclear meltdown.
When a powerful jet stream bringing in cold northern air collided with a large mass of warm, moist air from the south, the conditions were right for the tornadoes that have left at least 45 dead this week.
Survivors of a storm that killed 13 across the Mdwest recount their horror stories and the fear they felt.
It's the small details in the before-and-after photographs from tsunami-hit Fukushima Prefecture in northeastern Japan that are the most telling. A year later, there's not one power pole, wall-mounted gas meter or roadside curb that hasn't been meticulously attended to.
You wouldn't know the punk band was Japanese, a culture self-programmed for propriety.
The death toll from an enormous storm system that plowed through the Midwest and spawned more tornadoes as it moved east climbed late Wednesday to 12, authorities said.
KFVS brings us the first pictures of damage left behind by a tornado that ripped through Harrisburg, Illinois.
A storm system that produced a number of tornadoes in the Midwest was blamed for at least seven deaths in two states, officials said Wednesday.
CNN gets its first tour inside the Fukushima nuclear plant. CNN's Kyung Lah reports from the meltdown zone.
Twisted metal beams still jut from the top of Japan's Fukushima Daiichi stricken reactors, almost one year after a massive tsunami triggered nuclear meltdown.
Survivors of the earthquake and tsunami in Japan shared their stories with CNN last year.
Physicist Michio Kaku says the 'debris field from this Japanese tragedy is the size of the state of California.'
Japanese scientists believes the chances of a mega-quake hitting Tokyo have risen. CNN's Kyung Lah reports.
Fish and plankton collected from the Pacific Ocean near the Fukushima Daiichi nuclear power plant contain elevated levels of radioactive materials, but below levels that pose a threat to public health, researchers reported Tuesday.
The mayor of Christchurch, New Zealand, discusses the city's future and what it would take to attract foreign investors.
For the residents of Christchurch, New Zealand, time stopped at 12.51pm on February 22, 2011, when a massive earthquake ripped through the city, destroying homes, lives and businesses.
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