Reading A Letter That's Been Sealed For More Than 300 Years —Without Opening It

A signed, sealed, but not delivered letter from 1697 has finally been read with the help of a high-tech scan that looked inside without breaking its seal. (Image credit: Unlocking History Research Group)

Source: NPR Health and Science - March 2, 2021 Category: Consumer Health News Authors: Nell Greenfieldboyce Source Type: news