Jonsson reports that six weeks ago, University of California, Berkeley, engineering professor Robert Bea received a late-night call from an anonymous plumber. According to Bea […] the “mystery plumber” reached out to him because he had an idea for how to plug BP’s busted well in the Gulf. The plumber provided Bea with sketches of a containment cap that upgraded some of the design flaws in the cap the oil company deployed in its unsuccessful bid to plug the leak several weeks ago.