Efforts to implement a 'top kill,' pumping heavy mud into the broken riser pipe coming from the Deepwater Horizon oil well, are in progress, with hopeful signs. As oil experts continue to work to seal the gushing leak from the Deepwater Horizon oil catastrophe, we'll talk about cleanup efforts, from old-fashioned scrubbing to microbes that eat oil. Can the oil be cleaned up? How? How long will its effects linger? And what, if anything, will the Deepwater Horizon incident do to change how offshore drilling is conducted?
Produced by Christopher Intagliata, Associate Senior Producer