July 17, 2017
Lidar sheds light on roadside rockfall hazard
Rockfalls represent a significant hazard on many U.S. roadways that wind through steep terrain. But with money tight for roadside hazard …
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Rockfall
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5 articles · Page 1 of 1
February 2, 2016
Down to Earth With: Yosemite's first park geologist Greg Stock
As a child growing up in the foothills of California’s Sierra Nevada Mountains, Greg Stock and his family took frequent trips to Yosemite …
August 21, 2015
Seismometers listen for falling rocks
Scores of natural rockfalls occur in California’s Yosemite Valley every year, often with little or no advance warning, posing hazards to people …
April 20, 2015
Yosemite's cliffs in retreat
This past winter, two athletes grabbed the world’s attention as they climbed up the sheer walls of Yosemite National Park’s El Capitan. But some …
November 20, 2013
Witnessing geology in action: A rockfall in the garden of the gods
Editor's Note: Traditionally, EARTH has published a "highlights" or "year in review" issue at the end of the year. This year, we decided to try a …