BP Oil Spill Update: Top Kill Fail, Underwater Robots, Oil Plumes

On ABC News, BP managing director Bob Dudley said underwater robots will move in to saw off the top of the broken pipe.

"We're going to go in and put a cap on it and we'll be able to produce the fluids [the oil] and the next step is to make sure that we minimize the oil and pollution going into the Gulf," said Bob Dudley.

But experts say the plan will temporarily increase the amount of oil flowing into the Gulf.

White House energy advisor Carol Browner on CBS News:

"When they cut the riser, our experts are telling us it may be as much as 20 percent more oil," said Carol Browner.

Independent scientists and government officials say there's a disaster we can't see in the Gulf of Mexico's mysterious depths, the ruin of a world inhabited by enormous sperm whales and tiny, invisible plankton. Researchers say they've found at least two massive underwater plumes of what appears to be oil, each hundreds of feet deep and stretching for miles. Yet the chief executive of BP PLC—which has for weeks downplayed everything from the amount of oil spewing into the Gulf to the environmental impact—said there is "no evidence" that huge amounts of oil are suspended undersea.