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This week Science in Action comes from Louisiana as we investigate the oil spill in the Gulf of Mexico. President Obama calls it the worst environmental disaster this country has faced. We speak to ecologists, engineers, and biologists – to get the facts, including some surprising information you are unlikely to have heard before. Jon Stewart asks "Is everything possible being done?" We get on a boat and go to see the oil slick for ourselves and look at alternative approaches to cleaning up the oil.