There have been a number of major oil spills in recent years.
But while some of these spills have led to the deaths of thousands, others have left hundreds of people homeless.
In these spills, the keystone is one of the most toxic substances on Earth, known as ethane.
In 2013, the U.S. Energy Information Administration (EIA) released a report on some of the biggest spills in history, including the Exxon Valdez oil spill in Alaska and the Deepwater Horizon oil spill on the Gulf of Mexico.
They were the first reports of ethane spills since the 1950s.
Here are some of those spills that left people homeless: Exxon Valdes Exxon Valdés in Alaska.
The Exxon Valdedes oil spill was the largest oil spill to date, and the worst-ever.
The spill involved an oil rig that was operating off the coast of Alaska when it spilled more than 30,000 barrels of oil into the Gulf.
It was the first oil spill of its kind in the United States, and it caused an estimated $2.5 trillion in damage.
An estimated 1,400 people died in the disaster.
The worst-known spill in the country occurred in the Gulf in 1998, when an oil spill caused the death of 9 people and injured 4,500.
The Deepwater to Gulf of Maine oil spill.
The largest oil well ever drilled, the Deepsea to Gulf Oil Spill, produced more than 9 million barrels of crude oil, but only 7 people died when it was struck by a tanker on May 4, 2010.
The crew of the ship, the Mariner, was operating the well on the southern end of the Gulf, off the Bahamas, when it collided with a tanker and the resulting explosion killed 16 people.
The disaster was blamed on faulty maintenance, but the rig had not been properly calibrated and there was no way to test for the presence of ethylene.
It took nearly a decade for regulators to correct the problem, and now the spill has been traced to a faulty weld on the wellhead that failed to properly seal.
The biggest oil spill that occurred in North America was the Exxon Mobil spill in May 2002, when 2,100 barrels of toxic benzene were spilled into the Atlantic Ocean.
Three years later, in May 2006, a leak in the Marcellus Shale of Pennsylvania led to a release of nearly 9 million gallons of oil, including some that spilled into rivers and bayous.
The rupture of a pipe from a Chevron refinery in Richmond, Virginia, also led to widespread contamination of the surrounding area.
The first known oil spill involving ethane occurred in New York City in 1976, when a tanker spilled about 7,000 gallons of ethanolic acid on New York Harbor.
The refinery was located near a former chemical plant that had been used as a dumping ground for toxic chemicals and fertilizer.
It is believed that at least one of those chemicals, the industrial chemicals used to treat oil in the 1980s, was used in the initial cleanup of the plant.
Three decades later, the Exxon refinery, which had been closed for several years, reopened to the public, but it had become a hub for people to dump waste from the cleanup and to spray the chemical mixture on the city.
The second major oil spill occurred in 1974, when Exxon Valde spilled nearly 4.5 million gallons into the New York River, the largest spill in history.
The oil from the spill spread through the surrounding neighborhoods, causing the deaths and injuries of hundreds of residents.
The third major oil disaster occurred in 1980, when oil from a pipeline ruptured and spilled a total of 1.6 million gallons (about 2.8 million barrels) of ethanol into the river.
The pipeline had been constructed at the time as a backup to the New Jersey-Pennsylvania Pipeline and Tanker Line, but was later shut down.
The damage was so great that it had to be replaced and the oil that leaked was never recovered.
Many of the other spills that were reported in the media were not caused by an oil leak, but by the actions of people who had access to the pipeline.
For example, the BP Deepwater spill was caused by a man who had an oil tanker on his property.
In April 2010, an oil pipeline rupturing near Port of Long Beach, California, led to an explosion that killed seven people and damaged dozens more.
In December 2011, the oil pipeline that runs from a refinery in North Carolina to a storage facility in Florida leaked a total 5.4 million gallons, leaving residents of North Carolina and Florida without clean drinking water.
The last major oil pipeline spill occurred during World War II.
In November 1943, the German U-boat U-166 sank a U-boats ship off the French coast and sent the crew of that ship to a lifeboat.
The ship was carrying supplies for the U-2 spy plane that was flying spy missions over Germany. The U-1