Wyoming

A 2009 hydrothermal explosion at Biscuit Basin, similar to the one that happened this week.

Watch a Yellowstone Hot Spring Explode Into a Boiling Column of Mud, Water and Rock

Hydrothermal explosions typically occur every year in the popular national park, but rarely in areas so heavily trafficked by visitors

A two-year-old adult female bison named Wyoming Hope gave birth to the 30-pound calf on May 16.

Rare White Bison Born in Wyoming State Park

The 30-pound calf is not albino but gets its pale fur from cattle genes

At American Fossil Quarry, on privately owned land near Kemmerer, Wyoming, hammer- and chisel-wielding visitors pay $69 to $89 to spend up to four hours hunting for fossils. Finders, keepers.

The 50-Million-Year-Old Treasures of Fossil Lake

In a forbidding Wyoming desert, scientists and fortune hunters search for the surprisingly intact remains of horses and other creatures that lived long ago

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