Once again, Wal-Mart grabs the No. 1 spot. See which other companies are the largest on the planet. (
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Exxon Mobil again tops Fortune's list of top earners. Which other companies are among the most profitable on the planet? (
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Even giants like General Motors and Merrill Lynch had a rough time in 2007. Here are 20 companies that finished the year in the red. (
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The banking industry saw the biggest sales increase, while the airline business saw the biggest jump in profits, with earnings surging 118%. (
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