Last week in the Gulf of Mexico, actor Kevin Costner sparked headlines when he unveiled a device that appears to do a fine job of cleaning oil out of water. Some commentators seized the opportunity to make "Waterworld" jokes, but BP Plc took his machine seriously enough to be testing it this week.
"This is why Costner is so passionate about it," said fellow actor Stephen Baldwin on the telephone. "Because it really works." Baldwin, who is producing-directing a documentary about the oil catastrophe titled "Will to Drill," filmed the demonstration.
