A coalition of groups asked the U.S. Fish and Wildlife Service on Wednesday to revise the approach it takes to measuring grizzly bear recovery in the Northern Rockies, saying the current approach is outdated and has led to too many bear deaths.

There's nothing quite like winter in Yellowstone. Here's how to make the most of it.

The Brandywine Valley Trail Plan at First State National Historical Park in Delaware can move forward.

The 125th Annual Christmas Bird Count begins this week. Here's a list of national parks hosting events.