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| | National Park Service, Natural Resource Year in Review--2002 |
 | | For example, data from Walnut Canyon National Monument, 8 miles from Flagstaff, Arizona, indicate that although light from the city obviously causes light pollution, the night sky is far darker than would be expected (see image). |
 | | Forest Ecologist, Sequoia and Kings Canyon National Parks, California |
 | | A National Public Radio program examined endangered night skies in national parks, and a special issue of the George Wright Forum, edited by Joe Sovick, chief of recreation and partnerships for the Intermountain Region, received widespread attention. |
| www2.nature.nps.gov /YearInReview/yir2002/03_N.html (450 words) |
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