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mg22429950_900-4_1200Light and art have an uneasy relationship. Good lighting makes art come alive, but too much light can damage or destroy pigments, degrading vital colours. Harvard University thought a lot about lighting during its six-year, $350-million renovation of its landmark art museums. Italian architect Renzo Piano, famed for his use of light, was hired to install a glass “lantern” above the museums’ central courtyard, effectively providing a ceiling. Layers of glass and shades adjust and direct the light, maintaining temperature and humidity. At New Scientist