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Now Playing: 04-24-12 Marketplace

A former BP engineer was arrested and charged with intentionally destroying evidence related to how much oil was spilling from the company's broken well in the Gulf of Mexico in 2010. Walmart stock continues to plunge because of an investigation into a bribery scandal in Mexico, but what impact will this really have on the company? Countries all across Europe are pushing back against austerity and now its rearing its head in the first phases of the French elections. Some doctors are changing the way they do business amid the chaos of the health care industry. And author David Kennedy talks about success and his new novel "Temptation."