Diane Hope

Diane Hope

For centuries, Walnut Creek was home to Hualapai Indians, who lived there when Lieutenant Amiel Whipple and his military expedition passed through in 1853.

Francis Smiley

Skilled nomadic hunters in North America developed "high-tech" weaponry early on. They made a unique new projectile point style to attach to spears and throwing sticks about 13,500 years ago. 

Kurt Refsnider

Geologists know there’s no better place to see Earth’s history laid bare than on the Colorado Plateau. Prescott College professors Kurt Refsnider and Kaitlyn Boyle make the subject come alive for their students in a novel way—from the seat of a bicycle. 


Jesse Barber

Many insects and spiders rely on sounds and vibrations to find food, meet mates and detect predators. So it’s likely they’d be sensitive to the roar of heavy machinery. 


Earth Notes: Quiet Parks

Aug 16, 2017
National Park Service

Bugling elk, rolling thunder, the delicate trill of a hummingbird’s wings. These natural sounds can be heard in America’s national parks—some of the quietest places on Earth. 


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