Does the National Park Service have a youth problem?

CNN: In 2014, America's national parks attracted a record-setting 292.8 million visits, but the typical visitor to the country's biggest parks is edging closer to retirement age.

As Morgan Spurlock points out in the latest episode of "Inside Man," the average age of visitors to Denali is 57 years. In Yellowstone it is 54. But in the past decade, the number of visitors under the age of 15 has fallen by half.

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