The explosion on BP's Deepwater Horizon killed 11 people on April 20 and mushroomed into the greatest man-made natural disaster in U.S. history.
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Dr. Michael Ziccardi, a University of California-Davis wildlife expert and Dr. Bob Mallean, a senior veterinarian at the Audobon National Institute, examine a sea turtle at the The Louisiana Marine Mammal and Sea Turtle Rescue Center in New Orleans.
Photo by Lee Celano