A proposed plan for managing bison at Yellowstone National Park has generally received plaudits, though it has its critics and leaves some questions unanswered about the future for the country's national mammal.

A ranger at Bryce Canyon National Park in Utah has died from injuries sustained after tripping and falling while on-duty during the park's annual Astronomy Festival.

Rapidly drying out vegetation prompted Zion National Park officials to announce fire restrictions beginning Saturday.

Spring runoff out of the Rocky Mountains has raised the water level of Lake Powell in Glen Canyon National Recreation Area by 32 feet over the past three weeks, and the level should continue to rise in the coming weeks, prompting the National Park Service to warn visitors to keep rising water levels in mind.