Attendance has been falling at America's National Parks since 1987. Blame videophilia, says a Nature Conservancy report.

Videophilia is the love of electronic media. Those screens may be showing Internet, video games, movies or just plain TV. Young Americans are so glued to video that many rarely venture into the natural world outside. That troubles environmentalists, who see a growing estrangement from nature in high-tech societies. Funded by the National Science Foundation, the new s ...

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