BILLINGS – The picturesque Lamar Valley in Yellowstone National Park is a stronghold for wild bison. Spread out across the verdant grasslands, the animals allow visitors from around the world to ...

Question: What’s the difference between a popple tree and an aspen? I hear the terms used interchangeably. Answer: Popple (or poplar) are common names for aspen trees because their genus is populus, ...