sábado, 6 de febrero de 2016

jueves, 4 de febrero de 2016

miércoles, 3 de febrero de 2016

martes, 2 de febrero de 2016

Mystery Solved: “Sailing Stones” of Death Valley Seen in Action for the First Time



Scripps Oceanography paleooceanographer Richard Norris describes the phenomenon of sliding rocks in Death Valley.
https://scripps.ucsd.edu/news/mystery-solved-sailing-stones-death-valley-seen-action-first-time

lunes, 1 de febrero de 2016

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