Scripps Oceanography paleooceanographer Richard Norris describes the phenomenon of sliding rocks in Death Valley. Read the full story at scripps.ucsd.edu/news/mystery-solved-sailing-stones-death-valley-seen-action-first-time See the PLOS One study at www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0105948