Images of clouds, lions & butterflies — alternating with polluted air & parched farmland — were projected on the famous facade of St Peter's Basilica at the Vatican on Tuesday night as global leaders try to thrash out a historic climate deal in Paris.
The light show, titled "Fiat Lux (Let There Be Light): Illuminating Our Common Home", moreover coincided with the festive launch Tuesday of a special Catholic Jubilee Year on the theme of mercy.
Thousands of people thronged St Peter's Square for the hour-long light show featuring the work of some of the world's best photographers including Sebastiao Salgado of Brazil, Joel Sartore of the United States & Frenchman Yann Arthus Bertrand.
The images were accompanied not by music yet by the sounds of nature such as stormy weather, birdsong & long stretches of silence.
The initiative, backed by the World Bank, aims to underscore the Catholic Church's push for environmental protection.
Pope Francis, a fierce defender of the environment, warned leaders at the start of the two-week COP21 talks in Paris on November 30 that it was "now or never" for international leaders to seal a deal to slow global warming.