Know Yellowstone

In a controversial move, wolves were reintroduced into Yellowstone National Park and central Idaho 10 years ago this winter. Today, tourists from all over the world come to the park to see wolves in the wild, pouring millions into local economies.

This travel story covers a stay at the Lamar Buffalo Ranch in Yellowstone National Park, Wyoming, and a class on bison, where lectures are balanced with field studies of the burly beasts in action

We've heard about all kinds of disasters, real and imagined. One of the recent scares is the possibility of the Yellowstone supervolcano exploding- but is it really likely?

The U.S. National Park System is facing seven environmental problems: overuse, insufficient funds for park operation, threats to wildlife, the concession systems, energy and mineral development, atmospheric pollution, and activities on adjacent lands.

U.S. National Parks are set aside to preserve natural beauty and wildlife, but snowmobiles are ruining one of the Nation's greatest parks - Yellowstone.

You might think that if you've seen one national park you've seen them all but you couldn't be more wrong.