Gulf of Mexico oil spill
The fire and subsequent explosion on the Deepwater Horizon drilling platform on April 20 this year has set in motion the worst oil pollution incident in the Americas since the Exxon Valdez disaster on March 24 1989. The uncapped oil well is releasing an official estimate of 5000 barrels (21000 gallons) per day, although many are saying that this may actually be closer to 60,000 barrels (252,0000 gallons). By comparison, the Valdez incident released an estimated total of 250,000 barrels.