65 million years ago at the end of the Cretaceous Period eighty-five percent of all species disappeared, including the dinosaurs. This was the second largest ma

Mysterious nighttime lights near Brown Mountain in North Carolina's Pisgah National Forest have intrigued locals and visitors for more than a century. The resul

An encyclopedia designed especially to meet the needs of elementary, junior high, and senior high school students.

The 52 papers in this vary in content from summaries or state-of-knowledge treatments, to detailed contributions that describe new species. Although the distinc