First working day of World Sustainable Development Summit 2018, opening remarks by Dr Ajay Mathur, Director-General, TERI, keynote address by Prof Jeffrey Sachs, Director, Center for Sustainable Development, The Earth Institute, Columbia University, special remarks by Hon. Patricia Appiagyei, Deputy Minister for Environment, Science, Technology and Innovation, Government of Ghana and special address by H.E. Mr Nils Ragnar Kamsvag, Ambassador of Norway to India, Royal Norwegian Embassy