Medieval blue dye's molecular structure identified

A team of researchers affiliated with several institutions in Portugal has identified the molecular structure of folium, a blue watercolor dye used by medieval artists and book publishers. In their paper published in the ...

Last entry for Encyclopaedia Britannica book form

Hours after Encyclopaedia Britannica Inc. announced it will stop publishing print editions of its flagship encyclopedia for the first time in more than 200 years, someone among the editing minions of free online rival Wikipedia ...

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