The price and who pays: Updates from the Gulf

An explosion and fire on a drilling rig on April 20 left 11 workers missing and presumed dead. The rig sank two days later about 50 miles off the Louisiana coast. Since then, attempts to shut off the flow of oil streaming into the Gulf of Mexico have been unsuccessful and the search continues for a cause and for ways to prevent such blowouts in the future. Questions persist about who will be liable for damage from the spill and the risks to local wildlife.