Mystery solved: Why seashells' mineral forms differently in seawater
Cambridge MA (SPX) Mar 05, 2015 - For almost a century, scientists have been puzzled by a process that is crucial to much of the life in Earth's oceans: Why does calcium carbonate, the tough material of seashells and corals, sometimes take the form of calcite, and at other times form a chemically identical form of the mineral, called aragonite, that is more soluble - and therefore more vulnerable to ocean acidification? R ... more
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