One year ago, on April 20, 2010, an oil rig called Deepwater Horizon exploded and sank into the Gulf of Mexico. The oil spill that started with the explosion was the worst in U.S. history. A year after the disaster, the Gulf appears to be bouncing back–at least on the surface. Many animal populations were affected by the oil, and there is still oil in the depths of the Gulf, even if it cannot be seen on the surface. However, scientists warn that the true scope and lasting effects of the oil spill won’t be known for a long time.
Photograph courtesy Stephen Lehmann, U.S. Coast Guard