Late last month unusual rains hit Chile’s arid region, causing widespread flooding. “The downpour began… in the Atacama region, home to the world’s most arid desert, and lashed the area for hours, turning riverbeds that had been dry for years into torrents” (AFP, March 26, 2015). “President Michelle Bachelet said the downpour—equivalent to at least 10 times the previously drought-hit region’s average annual rainfall—had caught authorities off-guard.” (ibid.).