He found two skulls of this animal at the Grand Staircase-Escalante National Monument,in southern Utah.

VOA: special.2010.10.05

The Grand Canyon is proof of the power of this great river.

VOA: special.2009.08.12

On this anniversary,festivities include open air concerts,speeches and a grand fireworks finale on Monday night.

VOA: standard.2009.11.09