"Old Masters" such as Leonardo da Vinci, Sandro Botticelli and Rembrandt may have used proteins, especially egg yolk, in their oil paintings, according to...
A group called Ultima Generazione or Last Generation have poured what they described as a charcoal-based black liquid into the water of the Barcaccia fountain at the base of the Spanish Steps in central Rome.
"Old Masters" such as Leonardo da Vinci, Sandro Botticelli and Rembrandt may have used proteins, especially egg yolk, in their oil paintings, according to...