WASHINGTON, Aug. 1 (TNSres) -- The U.S. Department of the Interior Geological Survey issued the following abstract of an article: * * * Constraining landslide frequency across the United States to inform county-level risk reduction * Informative landslide hazard estimates are needed to support landslide mitigation strategies to reduce landslide risk across the United States. Whereas existing national-scale landslide susceptibility products assess where landslides are likely to occur, they do  more