Over 40 years rich and diverse experience of working with the United Nations System, civil society, Government and academics in senior supervisory positions. Served UNESCO for over 11 years providing intellectual, strategic and operational leadership to many regional and global programmes. Served as Secretary of the Intergovernmental SACAM (South & Central Asia Man and Biosphere) Network and focal point for category 2 centers on biotechnology and world natural heritage. Also was an Advisor (consultant) UNEP in developing a trans boundary landscape conservation project during 2018. Coordinated the UNESCO-Chair on Education for Sustainable Development and Human Habitat- at the Centre for Environment Education (CEE) and the CEPT University, Ahmedabad, India (2013) and UNESCO Chair on Climate Science and Policy at the TERI University (2012). He has taken a leadership role in many international bodies e.g. Co-founder and executive committee member of the World Ocean Network, National Organizer, Stockholm Junior Water Prize, active leader of the Global forum on oceans, coasts and Islands, visiting fellow at the School of Natural Resources & Environment, University of Michigan, Environmental Law Institute, Washington DC, World Aquarium, University of Bradford, UK and many other international networks and associations. Participated in many high level global events e.g. World Summit on Sustainable Development, Johannesburg (2002), UNFCC COPs in Bali & Copenhagen (2007 & 09), Biodiversity COPs at Nagoya (2010), Hyderabad (2012) and Peyong yong (2014). Recipient of several honours and awards including the prestigious Science Academy Medal for young scientists conferred by Indira Gandhi then prime minister of India in 1984. Currently Chief Executive Officer of Mobius Foundation, a New Delhi based environment and sustainability think tank.