US crews are continuing a clean-up operation in the Gulf of Mexico, desperately trying to contain a massive oil spill which is heading towards the shores of several US states.
The crews are trying to remove oil from the surface by skimming it, burning it or dispersing it with chemicals. They have been also laying oil booms as the last line of defence.
But so far they have had little success in stemming the flow of oil, as bad weather is hampering clean-up efforts.
Huge chambers are also being built to try to contain the spill. They will be placed over the leaks to channel oil to a tanker on the surface.
Satellite images released on Saturday showed that the slick had grown roughly to the size of Puerto Rico - about 3,500 sq miles (9,000 sq km).
The spill is now threatening wildlife in Louisiana’s fragile wetlands and also the coasts of Mississippi, Alabama, Louisiana and Florida.
It could also put out of business many local fishermen, who do not want to take chances selling possibly contaminated sea products.
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