Wildlife-based tourism is vital to the economy of several African nations, but a surging demand for ivory is putting some elephant populations at risk. Can the animals in and out of the continent's national parks survive the combined power of poachers, ivory markets--and the Internet?

A stately component of Bathhouse Row at Hot Springs National Park in Arkansas is moving from soothing patrons with hot waters to slaking them with microbrews.

Antietam battle was the single bloodiest battle in the Civil War. The landscape, which is the most important artifact, is being protected almost like it was in the 1860s.

If ever there was an exclamation point to a report warning of the consequences of climate change, Hurricane Sandy was it. As the storm swept up the Eastern Seaboard last fall it cut national seashores in two, inundated mainland parks that lie at sea level, downed untold scores of trees, and in its aftermath left the National Park Service with a glowing opportunity to put its parks back together with similarly potent storms in mind.