Oil spill

Here is an aerial image of oil on the Gulf's surface, taken from a U.S. Coast Guard aircraft in early May.

On Thursday, the U.S. Geological Survey estimated the well has spewed about 500,000 to 1 million gallons each day--greater than a previous estimate of 210,000 gallons a day.

If the estimates are accurate, even the most conservative figures would mean this disaster is worse than the 1989 Exxon Valdez spill in Alaska. The Valdez spilled 11 million gallons into Prince William Sound.

BP said Friday that it now estimates the total cost of the response to the Deepwater Horizon disaster at $930 million.

May 28, 2010 7:58 AM PDT

Photo by: Spc. 1st Class Michael B. Watkins