The Gulf of Mexico oil spill is spewing about 210,000 gallons (954,500 liters) of oil a day into the ocean, the Coast Guard estimates.
On April 22, 2010, Swiss-based Transocean Ltd's Deepwater Horizon rig sank in the Gulf of Mexico, two days after it exploded and caught fire while it was finishing a well for BP Plc about 40 miles southeast of the mouth of the Mississippi River.
While BP and the Coast Guard have already mounted what BP has called the largest oil spill containment operation in history, involving dozens of ships and aircraft, the oil slick continues to threaten coastal wildlife refuges, pristine beaches and estuaries in Louisiana, Mississippi, Alabama and Florida.
Stay tuned to this page for the latest news on this unfolding story:
- Size of spill expands: Five times as much oil as previously thought moves toward Gulf coast
- Burning operation begins in Gulf of Mexico
The controlled burns would be done far from shore, and crews would make sure marine life was protected.
Political fallout spreads with Gulf oil slick
Specter of oil reaching Florida beaches has Florida governor and Obama reconsidering their positions on offshore drilling.
Feds hear warnings about offshore drilling along East Coast
The Obama administration plans to open East Coast waters to oil exploration, but environmentalists and coastal residents criticize the move.
Opponents dominate NJ hearing on proposed offshore drilling
Residents and environmentalists tell federal officials they worried about the state's environment in light of the recent oil spill in the Gulf of Mexico.
Agencies to probe blast that sank oil rig
Homeland Security and the Departments of Interior are launching a joint investigation into the explosion at the Deepwater Horizon oil rig.
Gulf of Mexico spill may hit Louisiana coast this weekend
The spill occurred 36 miles from Louisiana's shore, but a shift in wind could push the spill to the state's coast by the weekend.
More drilling planned at site of oil leak
Drilling will soon begin to take pressure off the blown-out well that is spewing 42,000 gallons of crude oil a day into the Gulf of Mexico.
Engineers build giant dome to contain U.S. oil spill
BP's four robotic submarines have been unable to stop oil from leaking into the Gulf of Mexico.
Gulf oil spill gives Florida governor pause over drilling
Gov. Charlie Crist is reconsidering drilling off Florida's coast.
Oil spill growing in Gulf of Mexico off Louisiana coast
Wind is currently blowing the oil away from the shore, but winds could shift and bring oil to the coast.
Gulf of Mexico oil spill: BP scrambles to cap leak with robots
Company uses robotic underwater vehicles to capture an estimated 42,000 gallons of oil that are leaking into the ocean each day.
'Major oil spill' as rig sinks off U.S. coast
Officials said the spill has the potential to be the worst in the U.S. since the 1989 Exxon Valdez oil tanker spill in Alaska.
Oil spill could be Italy's eco-disaster
Spill began in the Lambro and has since reached the Po River Valley, the most important agricultural region in Italy.
Tanker collision spills 18,000 gallons of oil off Texas
An 820-foot tanker collided with a supply ship early Wednesday morning. Clean-up efforts have yet to begin, but the leak has been secured.
Ship operator pleads guilty in SF Bay oil spill
Fleet Management Ltd. agrees to pay $10 million fine.
The biggest US oil spill you never heard of
Brooklyn residents are pushing Big Oil and the government to remove millions of gallons of petroleum from their neighborhood.
Green States: Cap'n Hazelwood's wild ride
On the 20th anniversary of the mess, the Exxon Valdez still stains.