The Earth Hour campaign for 2013, to be observed on March 23 this year, was launched today by its CEO and co-Founder Andy Ridley at the Kadiragarmar Centre. Also attending the event was Environment Minister Anura Priyadarshana Yapa, Power and Energy Minister Champika Ranawaka and Minister of Agriculture Udaya Gamanpila. (Pix by Samantha Perera)