From Death Valley to Chile to Iran, similarly sized polygons of salt form in playas all over the world — and subterranean fluid flows might be the key to solving the long-standing puzzle of why.
Table salt, kosher salt, finishing salt: The choice can be confusing, but we offer a little explanation and advice. By Melissa Clark Reporting from Aigues-Mortes, France; Maldon, England; and Portland ...
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