The cleaning of Michelangelo’s David is turning into quite the public event, and a fierce argument has developed over the proper way to free David from his layers of grime. “The row centres on whether the statue should be cleaned using water to restore it to its original state or by a dry cleaning method which would be less radical and only remove the worst grime, according to UK press reports on Wednesday. A petition has been signed by more than 39 international art experts to stop Florence’s Galleria dell’Accademia using their planned wet technique and demanding that an independent commission should decide on the best method.”