Today’s Solutions: May 29, 2024
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Single pearl in mollusk shell.

The secret symmetry of pearls revealed

Pearls are created when an irritant, such as a grain of sand or debris, gets trapped inside a mollusk. As protection, a smooth layer of mineral and protein called nacre forms around it. Humans have been fascinated by these iridescent beauties since we first discovered them thousands of years ago. Read More...