Rajwant Singh co-founded EcoSikh in Washington, D.C., launching a faith-based environmental movement that transformed gurdwaras into models of ecological stewardship. Through tree-planting campaigns, environmentally sustainable gurdwaras, and advocacy for plant-based langar, EcoSikh demonstrated how Sikh institutions could address climate change through religious practice. From its American base, the organization expanded across India, Canada, and the United Kingdom, establishing the eco-gurdwara as a global model of faith-based environmental action.