This month an exhibition of paintings by Piero di Cosimo – Renaissance Italy's answer to Hieronymus Bosch – travels from the National Gallery of Art in Washington to the Uffizi in Florence, bringing ...

For thousands of years, artists have used a surprising ingredient in their paints: egg yolk. This type of paint, called egg tempera, has been found in ancient Egyptian mummy portraits, medieval ...

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Tempera is a painting medium that has been used to decorate everything from early Egyptian sarcophagi to India's rock-cut temples. The medium was particularly popular with medieval and early ...