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        Making Air Travel Safer | NOVA Online

        Ironically, the very airplane crashes that give air travelers the most pause serve as the chief catalysts for increased safety, as most key improvements to flight protocols and equipment follow large-scale investigations into the most terrible disasters. In this overview from NOVA Online, learn about a handful of major crashes that resulted in extensive inquiries and consequent changes. While safety experts caution that much still needs improvement -- including reducing the more than 300 runway incursions that occur in the U.S. alone each year -- these changes have made flying safer than ever.

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