Before conservation (Frans Schwartz (1850-1917), Annunciation, 1899, etching, 8 1/16 x 6 1/16 inches. Brigham Young University Museum of Art, 2014.) (Photo courtesy of Christina Thomas) After ...

Tenjugo is the thinnest paper in the world, made by a company in Japan. The paper dries to become nearly transparent and is used for repairing historical documents. It's been used to preserve art in ...