A volcanic crater in Indonesia over 7,700 feet (2,350 meters) above sea level is home to Earth's largest acidic lake, with water like battery acid. In this excerpt from "Beyond The Sea: The Hidden ...
Celtic salt is sea salt. It’s also called “sel gris” or “gray salt” because of its gray color, which comes from the extra minerals: magnesium, calcium, potassium, zinc, and iron. A grain of Celtic ...
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