Bollywood’s superstar Ajay Devgn has joined hands with WWF-India to pledge his support to the Earth Hour 2013– WWF’s global campaign, to raise awareness and inspire action on climate change. The official event, where he signed the pledge, was held at the ITC Maratha this year. Earth Hour is now the largest global environmental movement that enables individuals, organizations, governments and groups to show support for policies and practice that balance development and environmental concerns.