Earnings watch:

Tour bus plunges into a ravine, killing at least 37 people in Italy

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A bus crash in Italy is being called one of the worst in that country's history. At least 37 people were killed after the tour bus plunged 100 feet into a ravine Sunday, outside of Naples. Rescuers are still sifting through the ruble, looking for survivors. Gayle King reports.

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