An hour of darkness from 8.30pm, today is Earth hour - Energia & Energie. In Rome - announces the WWF - the lights of the Colosseum, of Piazza San Pietro will be turned off.
The Presidency of the Republic also takes part in the event. An appeal also came from the Secretary General of the United Nations, Antonio Guterres "together - he says - let's turn off the lights and take the world towards a brighter future for everyone"